Ah, old times... Developed and produced here in Almelo, the Netherlands. At the time the CombiScope series was developed we were Philips; later our plant was sold to Fluke. The main processor was a Intel 80c196kb microcontroller that contained bootcode written by me ;-) Yes, these Philips OQ chips were developed here.
Makes me sad as a Motorola fanboy. I had (still have) the PM3365 which seems like a predecessor to this device, and it's using a Motorola 68008 if I remember correctly.
Nice scopes, these Philips/Fluke combiscopes. We had a lot of PM3335s, 3350s and PM3394s where I worked some years ago. One problem occured when we tried to capture the pulses of high voltage breakdowns with several kilovolts (through a divider) with one of them. Had to set up the scope some 10 meters away with a terminated coax, the shielding of these are not great, as you saw with the all-plastic case. The old tube-based hp's did not care at all :) Seems yours has a PSU problem (overvoltage protect?) She'll be right :)
I got one for free, they stopped doing component repair where I worked and they piled all my equipment I had and said take it home with you and I did. I kicked myself in the butt years later for giving away all my antique computers, Apple, Apple II and Mac .. Mac Lisa running 6.08 because a friend said they weren't worth much and probably never will be again only to find them listed and sold laté for thousands of dollars!!! Yeah I was pissed
Fluke bought Philips Measurement equipment, inclusing the handheld scopes. In fact the hand held fluke scopemeters are still in use on many places and maybe even still sold new.
When I picked up my Agilent 54622D from eBay (the one with the ROCK_ON Easter egg), all it needed was a new coin cell for the memory. I love browsing through the "parts/not working" listings.
The Philips tubes were just stunning. I like the way they bonded an actual, perfectly flat glass plate with the graticule to the front of the cone and inserted the gun deflection assembly built in regular glass tube in to it. The only part that was moulded was the cone, and they used frit glass to solder the 3 parts together. And no, I never saw one go to air. Exceptional tubes, the spinout from Philips continued to make them for quite a long time, AFAIK, the last CRT manufacturer to close in Europe.
They were copying Tektronix and the way they made their tubes, but Tektronix took CRT construction to the extreme, using even ceramic envelopes for phenomenal thermal stability. And nobody ever made a finer tube than a Microchannel Plate Tektronix tube.
That scope was super clean inside - and so many things done top-notch, that it's surprising there were some oversights like the poor mounting clip design and lack of test points. But still - what a steal!
@@russellhltn1396 I have the same theory on retro computers, you get one mint in the box, beautiful - you just know its not going to work because it never worked! Hence mint in box.
Those 32k 2k/8k option resistors at 15:50 look quite interesting :) I wonder if this puppy can be upgraded with bigger memory chips (as it would seem that there are pins on the memory IC footprints for larger packages)
That would be interesting, you think it's feasible that the firmware would be able to recognize and utilize more memory without the need to modify it? Edit: 7:21 kind of suggests so. I'm going to have to rtfm on that.
My guess is the firmware will do it if they went to the effort to put in and label the jumpers. Will need to check the manual for the part number of the bigger chip required. The ones fitted are definitely 2K each.
Wow, what a score! I'd love to see a testing and repair video on this piece of kit. My first suspicion is a failed cap or solder joint in the power supply. The caps look good, but that doesn't really mean a whole lot.
2:00 in case you're wondering what the "flying saucer" on the front page of that manual is: it's the "Evoluon" in Eindhoven, the Netherlands, the home town of Philips (and me). Built in 1966 for Philips and was used as science museum until 1984. It still exists but is in use for other purposes now.
I bought one of these combiscopes in 4 channel. It shut off after a while as well. Turns out the fan was going out and it would overheat. One replacement fan later, and no more issues. I thought mine had more knobs than relying on buttons, but it was several years ago, and I don’t have that scope any longer.
I have one too, and I think I bought it for around 75 USD. Same condition but working. Use it regularly and have been for three or four years now. I have several other scopes, both modern and much faster analog and digital, but still use this one as I like it a lot. Nice score and look forward to the repair video.
Being from The Netherlands, this brings back so many memories! Those 1990s Philips batteries powered my toys. Later when I went to my first summer job, I used these Combiscopes a lot. Later still and I met some people from Almelo where these were built. Cool to see this stuff back!
The PS could be going into protection mode due to some other cause. I remember when Phillips announced their 7 ICs to make a TV it was a milestone. Their Compact Cassette wasn't bad either.
@@ernstoud They did invent the Paancake Motor that was first used in the second gen Walkman which extended battery life and slim case. James Russell 1965 is credited for the CD concept 1980 when Sony and Philips created the famed “Red Book” standard, which was a series of documents that outlined a 120mm diameter disc bearing music at a resolution of 16 bit/44.1kHz.
@Viewer19 A bit of a weird question maybe, but I noticed you wrote Phillips with double L, the same as I remember the name was written, so do you remember Phillips having a double L instead of the one there is now in the name? In case you're not familiar with the so-called Mandela effect, this one is a nice example for me personally as I clearly remember it being written with double L. And I'm not the only one remembering it like that, hence my question what your memories are. Thanks for even looking into this! It really means a lot for me and the research I'm doing around the "effect".
@@maesterwillyofthehouseofboink I realized my error right after posting dyslexia in my case afects names mostly ei orie endings more so when I am tired.
Got the exact same model since the beginning of the year. My first oscilloscope, and even though I kind of wish it had knobs and Vernier, it's still pretty freaking cool! I love that I can just switch between digital and analog mode.
I'd KILL for a scope like this. Such a good scope for the day I'm amazed. Due to COVID my budget is $0 and I've been reduced to designing a "dodgyscope" using a couple of microcontrollers. Which in itself has turned into an interesting project... I'm going to add a digital logic analyzer to it using some SRAM and counters to clock them. Thankfully I have the parts in my parts drawer so BOM is $0 for now :)
@@Okurka. nope but I bought them back when I had money, pre covid. Of course it will cost something for someone else to replicate the design once I publish it.
Last year I picked up one of those for 70 euro including a function generator, a set of probes/cables and even a cool fluke carrying bag for the scope. It works perfectly and I use it a lot for uni and projects, best deal of my life.
In this case I'm looking at the tiny camcorder sceen, and I already knew the scope was made in Hollad, so my brain merged them together when I could barely read the font.
For under 100 (AUD and not by much) I've "scored".... a broken HP 1742A with an arcing HV transformer (was able to find this part at a reasonable price), and whacked out horizontal that god knows what's wrong in this godforsaken PCB tetris machine, and a broken Tek 442 with a shorted and smoking seemingly irreplacable HV transformer, and a broken irreplacable 5 meg ohm focus pot. Not exactly winning....
Every time I go looking for a cheap scope (after my last $50 craigslist special I got like 10 years ago died in an irreparable way), I find nothing locally, and everything on ebay is too expensive to gamble on (especially after adding in shipping) or outright up into may as well just pay a bit more (or sometimes less!) and buy a new Siglent/Rigol territory. Like one of these combiscopes is $200-$500 delivered on US ebay right now, that's a bad deal between the modern low cost DSOs and questionable reliability of a 20+ year old used unit.
I've got the 1743 - same series, but with a time interval digital readout on the front panel - and I have to admit to being pretty disappointed by the way it's constructed. Older HP stuff was highly serviceable, but they seem to have forgotten about that in these units. At least it still came with schematics in the manual.
My bet is the voltage tripler is likely breaking down, because it used RIFA capacitors inside. Also note all the blue SMD resistors are also Phillips manufacture.
I scored two scopes at a surplus place. One was a Tektronics 2445A for $50 and the other is a Tektronics 2465B for $60. Both would not turn on which suggests power supply problem. I was able to locate a refurb power supply for the 2465B from Greece for $265 and it has been a great scope since. I was not able to locate a power supply or service manual for the 2445A, so I never bothered to do anything with it since the 2465B is the better model. Great score!
Used to have a 3082 if memory serves - very similar but 100Mhz and no memory. It was amazing. Bought it from UK Army auction for €150, sold it 15 years later for £150 😂 Absolutely amazing. Open it up and admire the absolute absence of trimmers. All is done via service menu.
I got the 200mhz version on ebay PM 3390b for just under $100 aud A few years back . The Triger level rotary encoder is a little bit fiddley and needs replacement but otherwise its mint. Great scope!
Worked with the 4 channel 3394B 200MHz for years @ Philips. Eating their own dog food. Once they really became obsolete was able to buy one for 40 euro’s. Still work fine altough the tube is burned in and fading. All those buttons were great to work with. Better than moving though the menu’s of modern scope. That being said.. a modern scope has more functionality. But never had a scope with faster GUI response. Also great to have analog mode when adc’s lacked speed back in the days. Always a quick way to check what was really going on… (aliasing articfacts….)
Fantastic engineering job. I've had a Philips/Fluke scope in for a PSU repair and it was a pain in the ass to disassemble, with multiple PCBs stacked on top of each other, meh. It had a stinky dead Rifa cap too! And this one is a complete opposite, just a few elegantly designed boards on a backplane, that's all. I wonder if you're gonna try your hand at fixing the dying-all-of-a-sudden issue.
My friend had an LG TV that would power cycle every minute. I took out the power supply board, nothing obviously wrong so I heated every solder joint on the primary side and now it works perfectly, a rare triumph! This strategy might work with your power board too.
Completely coincidentally, a PM3394B from eBay arrived here yesterday: I've always been intrigued about combiscopes, and I won't deny they still look sexy with all those buttons! Mine works except two channels 2 & 4 have large negative offsets in digital mode, I think this might be one of the hybrids :-( I had exactly the same batteries in mine too! One was dead, the other still measured 1.4V. I've changed the default trace intensity in analogue mode, as it went invisible after an autoset. More work to be done!
I've bought one as well (Fluke branded PM 3370B like in the video) a few weeks ago, seems to work great. I'd ask "what are the chances" but I can see the seller had a few of them, so likely they all came from some bigger organisation after being retired.
I *wish* modern MCUs/FPGAs came with the requisite MLCCs plonked on top of the package like that... the chip designers could just guarantee the required decoupling rather than painstakingly outlining it in the docs, and that'd be less components for me to route around/make space for on my boards. I realise the economics don't make sense or something, but still, I would be so happy.
Trace is very dim for full intensity. Those custom chips can EAT YOUR LUNCH! I went through that nightmare with Tektronix! Older scope: no more chips available! Scope was un-repairable junk.
I’ve had the 4 channel Philips branded 200 MHz version for years now. A bit yellower but the original (Belgian made) Phillips AAs are still going and clean. Glad to see it’s Dave approved. I thought it was cool the I’ve had the 4 channel Philips branded 200 MHz version for years now. A bit yellower but not bad. Glad to see it’s Dave approved. I thought it was cool the TV trigger mode has settings for analog HD systems at 1050, 1125 and 1250 lines.
Dave, can you do an entry level 4 channel scope comparison? It's been some time since the Rigol 1000Z were the best bang for the buck, what's the best choice now?
I bought a pristine Heathkit OS-1 once for £1 I think it was - 3db down at 2.5Mhz and full of tubular glass things ! Parked in my garage about 20 years ago, where it remains...
I've noticed headers for missing rear panel outputs on the mainboard, as well as RF connectors for 4 channels on the acquisition board. 1st DAC had CH1 and CH3, and 2nd DAC had CH2 and CH4 labeled connectors.
I was scoring a couple of Philips testgear in the last years - but unfortunately it seems like in recent times it got around, that this is some decent test gear. I bought TWO recently calibrated PM 2534 for 180€ ($230AUD) as bulk. I use those in my daily work. I have a set of PM2521 and a set of PM2525 - and now a set of PM2534. All together for under $350US. I absolutely love those.
I actually bought a Tektronix 2430A DSO at Tek's surplus sale (their home office is just down the street from me) for $65 - and it still works ;). It even has a strange serial number "CARLB"
Yes.. “Dodge” of the day award winner indeed! Ya goofed up in the time index list Dave. Or did you!? 🧐 The 'd' & 'b' keys are quite a distance from each other, at least on all of my keyboards. ¿sǝslǝ ʎpoqʎɹǝʌǝ ɯoɹɟ ʇuǝɹǝɟɟᴉp spɹɐoqʎǝʞ ǝᴉzzO ǝɹ∀ 🙃
Mine was cheaper, but yours is better. Scored a Tektronix 2213 'scope for US$75 shipped. Two channel, 60 MHz, all analog, no OSD and certainly no memory. It too required some simple repair (yay service manual!), but it works well for me, and simplicity is great for its repair-ability. One of your videos actually helped me figure out the calibration process in the service manual; thanks! Love the idea of a repair video on this Philips/Fluke -- an intermittent bug might actually present a challenge for you. 😁👍️
Wow! You're lucky! ;) I was hoping that it's some kind of a "constant bargain" from Fluke or that "they're making some cheapest models to make World better"! :))))))))))))))))
A few months back I snaffled a Leader LS1020 (spares/not working) for £35 Sterling on ebay. I could see from the advert that it had a sweep but there was only 1 trace showing. When I got it I found that there was indeed only one visible trace and it was clipping badly at anything above about 5mV/Div also, the vertical position adjustment did absolutely nothing. Anyway after some cleaning/lubricating it became apparent that both channels had a trace - they were just superimposed. Whilst checking power rails I managed to short something which resulted in the +120V dropping to less than 100V, eventually tracked down to a C-B short on a regulator transistor, so easy to fix. I think I had managed to flex the extension rod for the power switch and bridge it across the +120V rail and ground. Back to the display. I knew the issue had to be in an area that was common to both channels and so after checking the front end I started at the final vertical amplifier and worked backwards. All the electrolytics were in good physical shape so before lifting them all for checking, I checked all resistors in-situ on that board and found a common 33kOhm one completely open. I did not have a 1/2W one available so used a parallel pair of 1/4W, 64KOhm to check it. Result - it suddenly provided a crisp, clean example of an analogue trace on both channels - 'thing of beauty', as Dave might say! So, proper resistor installed and transistor (ebay again) replaced for about £8 Sterling, adjustments and partial calibration carried out and I have a lovely 20MHz 'scope for less than £50 + carriage. All pots and switches are a joy to use and it makes delightful Lissajous patterns. Winner, winner, chic ...................!!!
16:50 If that scope had been made in the 1950s or early 60s, I know exactly what those modules would be.....sort of the forerunners of ICs. They had ceramic-dipped modules that contained regular components, sometimes, even, subminiature tubes. Could those things be modern versions of that old idea? Maybe, they're full of SMD components, ICs without cases, etc, etc, all encased in epoxy, for protection?
I have had a internship at benchmark electronics in Almelo the Netherlands as part of my electronic engineering study. Benchmark electronics Almelo used to be the Philips measurement equipment division. in the 90's fluke and Philips had a alliance to make and market equipment to each others markets under there own name (so fluke equipment named Philips in Europe and Fluke branded Philips equipment in the usa). They still used the 4 channel 200MHz combiscopes on the production and test floor when i was there. I ended up with a Fluke branded PM3094 scope (4 channel 200MHz) in a employee equipment market for about 50 euro's while I was there that I still use.
Betcha anything it's a thermal glitch. Gets warm, expands, no longer connects what it's supposed to, poof there it goes. Cools off, turn it back on, fine until it gets warm again. I troubleshoot these with an upside down can of canned air or freeze spray. Let it glitch out and freeze stuff until it comes back on, you'll find it in maybe half a minute.
Philips oscilloscopes are great. I had one a long time ago, I have another now. Their front panel is made of plastic. The big problem with these oscilloscopes is the quality of the plastic. The plastic is thin and brittle. Cracks appear and pieces fall off. Gluing proved unsuccessful. Both of my Philips oscilloscopes had the same problem. they were two different models, the first was bought in Europe and the second in America, about ten years apart.
I agree, that is a gorgeous Philips design! However, as a former consumers electronics technician in the 80's-90's, this is too Philips for my taste. Simply: Japanese style stuff= easy to repair, reliable, profitable. Euro stuff= Yeah, reliable and durable but parts hard to find here in Argentina, weird mechanics, time consuming repairs, very low profit...
it is a Philips,just form when fluke did buy Philipis measurments division. Same model is alos avalibale under Philips brand Did get luck to get this one his big broter,the 4 channel variant for free. Big hole in the back is for a (optional) battery pack,so you can use it in the field without a power socket nearby.
Mine has been in storage since 2015. Drug it out now and same thing. On a while and off. I've ordered a mass recap from Mouser. Gotta watch 1452 to see what you find!
i found a non-working 4-channel philips pm3384 scope a couple months back and am attempting to get it back in working order. It seems to be in bad shape : fuse blows instantly and kills the main switching transistor at the same time. Also seemed like old leftover parts were slapped in as it has a badly burnt-in tube. I got me a Fluke pm3370 which seems to work ok, hoping i can revive the 4-channel one with it.
The two SIP ICs you were asking about are for buffering according to their info. I'm not sure why they went with that particular package. They look like the PEC circuits, that were used in some of the old tube equipment.
I have had a PM3394 for 26 years now and use it as my daily scope because of its great flexibility and better user interface compared to many more modern scopes. I mostly use it in analog and only occasionally switch to digital mode for those more difficult measurements. Still works great after all this time and it still has the original Philips (made in Belgium not Poland) batteries which still read more than 1.5V.
@@justotalkalottashit8392 ah, sorry, my bad! I listened to the video (mostly) and shouldn't comment so late at night. I thought you referred to the scope itself, not the batteries, gah! I can still be wrong about the scope, correct me if I'm wrong, but I don't think Fluke rebranded Philips scopes were produced in Poland. I'll check the "made in..." label on mine when I'm back from work. I suspect Netherlands though, Philips being a company from there, but I'm not sure where they were actually put together in.
At 13:47 it's clear that the DIN41612 power board connector is not properly seated. Was that caused by shipping, or and eager Dave trying to pull the board out earlier? If shipping, could that contribute to the shutdown?
Don’t be surprised if it turns out to be a bad power switch. I have an old HP signal generator that does the same thing. It’s better having cycled it a few times, but I need to clean it up. I know it’s the power button because it had a few times wiggling the button got the power to rapidly cycle off and on. Had the same delay to failure. Of course, problems in the HV power supply could be going on, but you know how often it’s just a switch or the power supply.
Thanks Dave, Im dreaming about diferent model at ebay months but cant buy it because price... Now dream is gone, after your video prices reaches sky... 😂
I cannot wait till I buy myself a nice oscilloscope that is not dissimilar to this one for me to probe motherboards on computers and other PC PCB diagnosis. The comment about capacitors having reefer madness I made a comment on the Streetmachine TV about a particular shirt I seen for sale here in Adelaide which had a wacky tabacky leaf a vb logo on the side and a centrelink logo with a stupid slogan so I didn't get it. But capacitors popping on Motherboards I had one go near my face didn't cause any harm but made me jump that was for sure. Back in the socket A and Pentium 4 day type motherboards and around that era.
Well now we know why you got such a deal. Bap E caps or resolder some connections in the PS. Never repaired unit. Maybe you will find the fault in an upcoming video. Well made unit despite some bodges otherwise Dave.
the scope is actually a Phillips device. its rebranded as a fluke. if you look around for the phillips PM series you will usually find the fluke counterpart as well. all made in holland/netherlands in the phillips factories. if you look at even modern phillips medical devices they will have bascially the same colors, buttons and fonts as they did back in the 90's. phillips had its own semiconductor factory and design center. so there would be no reason to go outside for (most) parts when phillips was already on top and the chip design guys were a few offices down the hall.
i have a PM3380B that does not work any more :( HV psu is shot, no picture, high pitch buzz. but it beeps and bobs when i turn it on and push buttons and turn knobs etc.
If you had a thermal camera, I believe I've seen you use one, that would seem to be step one. The power supply is either sensing over temperature or overcurrent condition. Most likely.
i used to sell these until they were no longer current product. yeah. that far back - i'm old. nobody bought these. i was offered to keep my demo unit, and i didn't even want it. these were not very good, honestly.
well i guess its time to find out what's an eBay. but gushhhh that PCBs... chess pattern... have u ever seen anything like that anywhere? isn't that clever. wish to see the manual that came with it
Nice! I've got the 4 channel version. But its in pieces on the healing bench, half way through re-caping it. Fingers crossed! :-) Mine has similar problem, after about 10 minutes warm up, it starts to reset, and the resets get closer together as the scope heats up.
@@azza-in_this_day_and_age How would this cause resets? I have 2 theories: 1) an electrolytic is leaking and as it heats it pull the processor rail down, until it resets. 2) the processor or ROM has had too many hours and as they heat, one or the other gets corrupted and then resets. I hope its theory 1 and not theory 2. 1 is fixable, 2 might be fixable if its the processor, but if its the ROM, its likely not fixable, as there are no sources for the code in these ROMs. :-)
@@mcconkeyb the thermistor, as the name would imply, can overheat and cause the circuit to open, if broken in a certain way, it would allow for a reset upon cooling. i ran into it on an hvac blower motor. the intermittent faults are always a challenge, best of luck in your diagnosing
Unboxing video is here: odysee.com/@eevblog:7/2022-01-18-FlukeScopeUnboxing:f
How do you even manage that? Id give up a kidney to find something like that for such a low amount of money
Do you have a repair shop? If yes, where?
I wonder how much you paid for shipping to Australia.
Those pale blue electrolytic caps are absolute garbage. German equipment I work on has those same caps and they are a VERY high failure rate.
You heard a high pitched squeal when it fails? I vote for the high voltage multiplier failing.
Ah, old times...
Developed and produced here in Almelo, the Netherlands. At the time the CombiScope series was developed we were Philips; later our plant was sold to Fluke.
The main processor was a Intel 80c196kb microcontroller that contained bootcode written by me ;-)
Yes, these Philips OQ chips were developed here.
Makes me sad as a Motorola fanboy. I had (still have) the PM3365 which seems like a predecessor to this device, and it's using a Motorola 68008 if I remember correctly.
Do we see the 80C196KB in the video?
@@mojoblues66
Yes, D100 on the board with the serial port and IEEE bus at 17:55
@@robvandeschepop8595 Ah right I see it. But doesn't it say 83C196KB?
Nice to hear from an engineer who contributed to the design :)
Saturday morning live streams are always good to join in on! 👍
Nice scopes, these Philips/Fluke combiscopes. We had a lot of PM3335s, 3350s and PM3394s where I worked some years ago. One problem occured when we tried to capture the pulses of high voltage breakdowns with several kilovolts (through a divider) with one of them. Had to set up the scope some 10 meters away with a terminated coax, the shielding of these are not great, as you saw with the all-plastic case. The old tube-based hp's did not care at all :) Seems yours has a PSU problem (overvoltage protect?) She'll be right :)
I got one for free, they stopped doing component repair where I worked and they piled all my equipment I had and said take it home with you and I did. I kicked myself in the butt years later for giving away all my antique computers, Apple, Apple II and Mac .. Mac Lisa running 6.08 because a friend said they weren't worth much and probably never will be again only to find them listed and sold laté for thousands of dollars!!! Yeah I was pissed
i had no idea fluke made oscilloscopes huh dave i learn something from you in every video
Fluke bought Philips Measurement equipment, inclusing the handheld scopes. In fact the hand held fluke scopemeters are still in use on many places and maybe even still sold new.
@@ReneKnuvers74rk oh ok so their measurement equipment was a separate division kind of like how hp was or rather is still kool
Fluke bought Philips, and for a few years branded them as Fluke/Philips.
@@EEVblog what a bobby dazler lol
When I picked up my Agilent 54622D from eBay (the one with the ROCK_ON Easter egg), all it needed was a new coin cell for the memory. I love browsing through the "parts/not working" listings.
Me to. Often specify "HP for parts or not working" or similar for Tek.
I thought it was Phillips, you should go to the Lab in Moorebank if it is still there.
So, this would be about 140 dollarydoos?
winner winner chicken starters i would suggest 😝
The Philips tubes were just stunning. I like the way they bonded an actual, perfectly flat glass plate with the graticule to the front of the cone and inserted the gun deflection assembly built in regular glass tube in to it. The only part that was moulded was the cone, and they used frit glass to solder the 3 parts together. And no, I never saw one go to air. Exceptional tubes, the spinout from Philips continued to make them for quite a long time, AFAIK, the last CRT manufacturer to close in Europe.
They were copying Tektronix and the way they made their tubes, but Tektronix took CRT construction to the extreme, using even ceramic envelopes for phenomenal thermal stability. And nobody ever made a finer tube than a Microchannel Plate Tektronix tube.
That scope was super clean inside - and so many things done top-notch, that it's surprising there were some oversights like the poor mounting clip design and lack of test points. But still - what a steal!
I was amazed, not a spec of dust. Probably only had a few 10's of hour of use or something.
What do you bet that it wasn't used due to this power problem and no one bothered to send it back or get it fixed?
@@russellhltn1396 ..... Good detective work Mycroft, (Sherlock's smarter brother).
I was thinking the same.
@@russellhltn1396 I have the same theory on retro computers, you get one mint in the box, beautiful - you just know its not going to work because it never worked! Hence mint in box.
Those 32k 2k/8k option resistors at 15:50 look quite interesting :) I wonder if this puppy can be upgraded with bigger memory chips (as it would seem that there are pins on the memory IC footprints for larger packages)
That would be interesting, you think it's feasible that the firmware would be able to recognize and utilize more memory without the need to modify it?
Edit: 7:21 kind of suggests so. I'm going to have to rtfm on that.
My guess is the firmware will do it if they went to the effort to put in and label the jumpers. Will need to check the manual for the part number of the bigger chip required. The ones fitted are definitely 2K each.
@@EEVblog that would be an idea for a video. If you could manage it, I'd try it too.
Above the upper right edge of the ceramic IC of someone wants to have a look
Wow, what a score! I'd love to see a testing and repair video on this piece of kit. My first suspicion is a failed cap or solder joint in the power supply. The caps look good, but that doesn't really mean a whole lot.
2:00 in case you're wondering what the "flying saucer" on the front page of that manual is: it's the "Evoluon" in Eindhoven, the Netherlands, the home town of Philips (and me). Built in 1966 for Philips and was used as science museum until 1984. It still exists but is in use for other purposes now.
Remember visiting the museum as a kit - impressive building!
I bought one of these combiscopes in 4 channel. It shut off after a while as well. Turns out the fan was going out and it would overheat. One replacement fan later, and no more issues.
I thought mine had more knobs than relying on buttons, but it was several years ago, and I don’t have that scope any longer.
This needs to be higher.
I have one too, and I think I bought it for around 75 USD. Same condition but working. Use it regularly and have been for three or four years now. I have several other scopes, both modern and much faster analog and digital, but still use this one as I like it a lot.
Nice score and look forward to the repair video.
Being from The Netherlands, this brings back so many memories! Those 1990s Philips batteries powered my toys. Later when I went to my first summer job, I used these Combiscopes a lot. Later still and I met some people from Almelo where these were built. Cool to see this stuff back!
Same. Got a huge nostalgia hit looking at those Philips batteries.
The PS could be going into protection mode due to some other cause. I remember when Phillips announced their 7 ICs to make a TV it was a milestone. Their Compact Cassette wasn't bad either.
Not forgetting the CD are we? Lots of people think that was a Sony invention.
@@ernstoud They did invent the Paancake Motor that was first used in the second gen Walkman which extended battery life and slim case. James Russell 1965 is credited for the CD concept 1980 when Sony and Philips created the famed “Red Book” standard, which was a series of documents that outlined a 120mm diameter disc bearing music at a resolution of 16 bit/44.1kHz.
@Viewer19 A bit of a weird question maybe, but I noticed you wrote Phillips with double L, the same as I remember the name was written, so do you remember Phillips having a double L instead of the one there is now in the name? In case you're not familiar with the so-called Mandela effect, this one is a nice example for me personally as I clearly remember it being written with double L. And I'm not the only one remembering it like that, hence my question what your memories are.
Thanks for even looking into this! It really means a lot for me and the research I'm doing around the "effect".
@@maesterwillyofthehouseofboink I realized my error right after posting dyslexia in my case afects names mostly ei orie endings more so when I am tired.
Coming, friend. Amazing. The best video, friend.. great.. greetings from your best friend, Indonesian Traditional Gold Seeker🇦🇺🇮🇩👍👍
Got the exact same model since the beginning of the year. My first oscilloscope, and even though I kind of wish it had knobs and Vernier, it's still pretty freaking cool!
I love that I can just switch between digital and analog mode.
I'd KILL for a scope like this. Such a good scope for the day I'm amazed. Due to COVID my budget is $0 and I've been reduced to designing a "dodgyscope" using a couple of microcontrollers. Which in itself has turned into an interesting project... I'm going to add a digital logic analyzer to it using some SRAM and counters to clock them. Thankfully I have the parts in my parts drawer so BOM is $0 for now :)
@@Okurka. nope but I bought them back when I had money, pre covid. Of course it will cost something for someone else to replicate the design once I publish it.
..... Circumstance steering you down a brain improving path you may not have taken.
Don't worry Dave, confusing Holland with Poland is really common for Austrians 🤪
Those Philips batteries sure look like late 90's design 😁
Last year I picked up one of those for 70 euro including a function generator, a set of probes/cables and even a cool fluke carrying bag for the scope. It works perfectly and I use it a lot for uni and projects, best deal of my life.
3:07 why does everyone mistake Poland with Holland?
In this case I'm looking at the tiny camcorder sceen, and I already knew the scope was made in Hollad, so my brain merged them together when I could barely read the font.
Dey are spelt the saam...
For under 100 (AUD and not by much) I've "scored".... a broken HP 1742A with an arcing HV transformer (was able to find this part at a reasonable price), and whacked out horizontal that god knows what's wrong in this godforsaken PCB tetris machine, and a broken Tek 442 with a shorted and smoking seemingly irreplacable HV transformer, and a broken irreplacable 5 meg ohm focus pot. Not exactly winning....
Every time I go looking for a cheap scope (after my last $50 craigslist special I got like 10 years ago died in an irreparable way), I find nothing locally, and everything on ebay is too expensive to gamble on (especially after adding in shipping) or outright up into may as well just pay a bit more (or sometimes less!) and buy a new Siglent/Rigol territory. Like one of these combiscopes is $200-$500 delivered on US ebay right now, that's a bad deal between the modern low cost DSOs and questionable reliability of a 20+ year old used unit.
I've got the 1743 - same series, but with a time interval digital readout on the front panel - and I have to admit to being pretty disappointed by the way it's constructed. Older HP stuff was highly serviceable, but they seem to have forgotten about that in these units. At least it still came with schematics in the manual.
..... One of my pet hates five decades ago was opening a TV and seeing that some dickface had siliconed up a cracked EHT to save a couple of dollars.
My bet is the voltage tripler is likely breaking down, because it used RIFA capacitors inside. Also note all the blue SMD resistors are also Phillips manufacture.
I think the small blue electrolytic capacitors are Phillips too, today being manufactured by Vishay.
I hope it's not the tripler and it's just a part I can easily replace.
RIFA madness !
@UC-Oqbitl8rdcBnWttTLgErw The bots are on almost every one of my videos.
@@EEVblog Here's how to deal with spambots: th-cam.com/video/2tRppXW_aKo/w-d-xo.html
Philips batteries was made in POLAND. Best regards from POLAND ;)
I scored two scopes at a surplus place. One was a Tektronics 2445A for $50 and the other is a Tektronics 2465B for $60. Both would not turn on which suggests power supply problem. I was able to locate a refurb power supply for the 2465B from Greece for $265 and it has been a great scope since. I was not able to locate a power supply or service manual for the 2445A, so I never bothered to do anything with it since the 2465B is the better model. Great score!
From my experience, philips electrolytic caps are not that good, they like to dry out. In this case i would check the little blue ones.
Used to have a 3082 if memory serves - very similar but 100Mhz and no memory. It was amazing. Bought it from UK Army auction for €150, sold it 15 years later for £150 😂
Absolutely amazing. Open it up and admire the absolute absence of trimmers. All is done via service menu.
I got the 200mhz version on ebay PM 3390b for just under $100 aud A few years back . The Triger level rotary encoder is a little bit fiddley and needs replacement but otherwise its mint. Great scope!
Worked with the 4 channel 3394B 200MHz for years @ Philips. Eating their own dog food. Once they really became obsolete was able to buy one for 40 euro’s. Still work fine altough the tube is burned in and fading.
All those buttons were great to work with. Better than moving though the menu’s of modern scope. That being said.. a modern scope has more functionality. But never had a scope with faster GUI response.
Also great to have analog mode when adc’s lacked speed back in the days. Always a quick way to check what was really going on… (aliasing articfacts….)
Fantastic engineering job. I've had a Philips/Fluke scope in for a PSU repair and it was a pain in the ass to disassemble, with multiple PCBs stacked on top of each other, meh. It had a stinky dead Rifa cap too! And this one is a complete opposite, just a few elegantly designed boards on a backplane, that's all. I wonder if you're gonna try your hand at fixing the dying-all-of-a-sudden issue.
My friend had an LG TV that would power cycle every minute. I took out the power supply board, nothing obviously wrong so I heated every solder joint on the primary side and now it works perfectly, a rare triumph! This strategy might work with your power board too.
Good idea, it's probably a dry solder joint on those heavy power supply components.
@@Tech2C Yes, it occurred to me that it was a temperature/movement related issue possibly. Be interesting to see what he finds.
Completely coincidentally, a PM3394B from eBay arrived here yesterday: I've always been intrigued about combiscopes, and I won't deny they still look sexy with all those buttons! Mine works except two channels 2 & 4 have large negative offsets in digital mode, I think this might be one of the hybrids :-(
I had exactly the same batteries in mine too! One was dead, the other still measured 1.4V.
I've changed the default trace intensity in analogue mode, as it went invisible after an autoset. More work to be done!
I've bought one as well (Fluke branded PM 3370B like in the video) a few weeks ago, seems to work great. I'd ask "what are the chances" but I can see the seller had a few of them, so likely they all came from some bigger organisation after being retired.
Channels 2 & 4? That's weird, as they'd be on seperate cards.
Those "bodges" looks to me like they trying to get some heat away from the chips...
There is hardly any heatsining effect in that. If they wanted that they would have just used an adhesive heatsink.
@@EEVblog Yeah... the adhesive heatsink makes more sense, I thought I spottend a bit of thermal paste and had this idea ;)
I *wish* modern MCUs/FPGAs came with the requisite MLCCs plonked on top of the package like that... the chip designers could just guarantee the required decoupling rather than painstakingly outlining it in the docs, and that'd be less components for me to route around/make space for on my boards. I realise the economics don't make sense or something, but still, I would be so happy.
Trace is very dim for full intensity. Those custom chips can EAT YOUR LUNCH! I went through that nightmare with Tektronix! Older scope: no more chips available! Scope was un-repairable junk.
I’ve had the 4 channel Philips branded 200 MHz version for years now. A bit yellower but the original (Belgian made) Phillips AAs are still going and clean. Glad to see it’s Dave approved.
I thought it was cool the I’ve had the 4 channel Philips branded 200 MHz version for years now. A bit yellower but not bad. Glad to see it’s Dave approved.
I thought it was cool the TV trigger mode has settings for analog HD systems at 1050, 1125 and 1250 lines.
Dave, can you do an entry level 4 channel scope comparison? It's been some time since the Rigol 1000Z were the best bang for the buck, what's the best choice now?
looks like it costs $9999. especially inside
18:03 Thought those were from Motorola, cannot see it well though.
if its the same symbol as in 16:34 then it IS motorola :)
I bought a pristine Heathkit OS-1 once for £1 I think it was - 3db down at 2.5Mhz and full of tubular glass things ! Parked in my garage about 20 years ago, where it remains...
The scope looks very nice - Thanks for Video - Greetings from Poland
I've noticed headers for missing rear panel outputs on the mainboard, as well as RF connectors for 4 channels on the acquisition board. 1st DAC had CH1 and CH3, and 2nd DAC had CH2 and CH4 labeled connectors.
I was scoring a couple of Philips testgear in the last years - but unfortunately it seems like in recent times it got around, that this is some decent test gear. I bought TWO recently calibrated PM 2534 for 180€ ($230AUD) as bulk. I use those in my daily work. I have a set of PM2521 and a set of PM2525 - and now a set of PM2534. All together for under $350US. I absolutely love those.
$99.00 USD Dave - but how much was postage - they are ridiculous when it comes to postage from US to AU. Still, a nice score for sure.
I actually bought a Tektronix 2430A DSO at Tek's surplus sale (their home office is just down the street from me) for $65 - and it still works ;). It even has a strange serial number "CARLB"
I still use another combiscope Hameg HM-1508 . About 17 years ago I bought it new from local dealer. Analog part is excellent.
12:49 Is there something going on with that cap on the right side? j1001 ch1 or is it just the angle of the camera?
Noticed that as well. Posted a dup of your observation, but you were first! :) I wondered if anyone else saw that bloated cap.
Yes.. “Dodge” of the day award winner indeed!
Ya goofed up in the time index list Dave. Or did you!? 🧐 The 'd' & 'b' keys are quite a distance from each other, at least on all of my keyboards.
¿sǝslǝ ʎpoqʎɹǝʌǝ ɯoɹɟ ʇuǝɹǝɟɟᴉp spɹɐoqʎǝʞ ǝᴉzzO ǝɹ∀ 🙃
Mine was cheaper, but yours is better. Scored a Tektronix 2213 'scope for US$75 shipped. Two channel, 60 MHz, all analog, no OSD and certainly no memory. It too required some simple repair (yay service manual!), but it works well for me, and simplicity is great for its repair-ability. One of your videos actually helped me figure out the calibration process in the service manual; thanks! Love the idea of a repair video on this Philips/Fluke -- an intermittent bug might actually present a challenge for you. 😁👍️
Wow! You're lucky! ;)
I was hoping that it's some kind of a "constant bargain" from Fluke or that "they're making some cheapest models to make World better"! :))))))))))))))))
A few months back I snaffled a Leader LS1020 (spares/not working) for £35 Sterling on ebay. I could see from the advert that it had a sweep but there was only 1 trace showing. When I got it I found that there was indeed only one visible trace and it was clipping badly at anything above about 5mV/Div also, the vertical position adjustment did absolutely nothing. Anyway after some cleaning/lubricating it became apparent that both channels had a trace - they were just superimposed. Whilst checking power rails I managed to short something which resulted in the +120V dropping to less than 100V, eventually tracked down to a C-B short on a regulator transistor, so easy to fix. I think I had managed to flex the extension rod for the power switch and bridge it across the +120V rail and ground.
Back to the display. I knew the issue had to be in an area that was common to both channels and so after checking the front end I started at the final vertical amplifier and worked backwards. All the electrolytics were in good physical shape so before lifting them all for checking, I checked all resistors in-situ on that board and found a common 33kOhm one completely open. I did not have a 1/2W one available so used a parallel pair of 1/4W, 64KOhm to check it.
Result - it suddenly provided a crisp, clean example of an analogue trace on both channels - 'thing of beauty', as Dave might say!
So, proper resistor installed and transistor (ebay again) replaced for about £8 Sterling, adjustments and partial calibration carried out and I have a lovely 20MHz 'scope for less than £50 + carriage. All pots and switches are a joy to use and it makes delightful Lissajous patterns. Winner, winner, chic ...................!!!
16:50 If that scope had been made in the 1950s or early 60s, I know exactly what those modules would be.....sort of the forerunners of ICs. They had ceramic-dipped modules that contained regular components, sometimes, even, subminiature tubes. Could those things be modern versions of that old idea? Maybe, they're full of SMD components, ICs without cases, etc, etc, all encased in epoxy, for protection?
I managed to pick up a 4 channel 200mhz/200ms/s pm3394 for around 140 USD a few years back. Fantastic scope, and it's even got FFT!
I have had a internship at benchmark electronics in Almelo the Netherlands as part of my electronic engineering study. Benchmark electronics Almelo used to be the Philips measurement equipment division. in the 90's fluke and Philips had a alliance to make and market equipment to each others markets under there own name (so fluke equipment named Philips in Europe and Fluke branded Philips equipment in the usa). They still used the 4 channel 200MHz combiscopes on the production and test floor when i was there. I ended up with a Fluke branded PM3094 scope (4 channel 200MHz) in a employee equipment market for about 50 euro's while I was there that I still use.
The blip at 14:37 had more concered for a moment, I thought something in my PC just popped.
Just picked up a cherished, calibrated 4 channel one for £140. 100Mhz..... bargain.
Betcha anything it's a thermal glitch. Gets warm, expands, no longer connects what it's supposed to, poof there it goes. Cools off, turn it back on, fine until it gets warm again.
I troubleshoot these with an upside down can of canned air or freeze spray. Let it glitch out and freeze stuff until it comes back on, you'll find it in maybe half a minute.
Philips oscilloscopes are great.
I had one a long time ago, I have another now.
Their front panel is made of plastic. The big problem with these oscilloscopes is the quality of the plastic.
The plastic is thin and brittle. Cracks appear and pieces fall off.
Gluing proved unsuccessful.
Both of my Philips oscilloscopes had the same problem. they were two different models, the first was bought in Europe and the second in America, about ten years apart.
I agree, that is a gorgeous Philips design! However, as a former consumers electronics technician in the 80's-90's, this is too Philips for my taste.
Simply: Japanese style stuff= easy to repair, reliable, profitable.
Euro stuff= Yeah, reliable and durable but parts hard to find here in Argentina, weird mechanics, time consuming repairs, very low profit...
it is a Philips,just form when fluke did buy Philipis measurments division.
Same model is alos avalibale under Philips brand
Did get luck to get this one his big broter,the 4 channel variant for free.
Big hole in the back is for a (optional) battery pack,so you can use it in the field without a power socket nearby.
Mine has been in storage since 2015. Drug it out now and same thing. On a while and off. I've ordered a mass recap from Mouser. Gotta watch 1452 to see what you find!
i found a non-working 4-channel philips pm3384 scope a couple months back and am attempting to get it back in working order. It seems to be in bad shape : fuse blows instantly and kills the main switching transistor at the same time. Also seemed like old leftover parts were slapped in as it has a badly burnt-in tube. I got me a Fluke pm3370 which seems to work ok, hoping i can revive the 4-channel one with it.
Probably this was made in the prior Philips Instrument factory in Holland after acquired by Fluke. (previously Philips staff)
The two SIP ICs you were asking about are for buffering according to their info. I'm not sure why they went with that particular package. They look like the PEC circuits, that were used in some of the old tube equipment.
NICE SCORE DAVE WINNER WINNER CHICKEN DINNER
I have had a PM3394 for 26 years now and use it as my daily scope because of its great flexibility and better user interface compared to many more modern scopes. I mostly use it in analog and only occasionally switch to digital mode for those more difficult measurements.
Still works great after all this time and it still has the original Philips (made in Belgium not Poland) batteries which still read more than 1.5V.
It wasn't being made in Poland anyway, but rather Holland (Netherlands).
@@justotalkalottashit8392 ah, sorry, my bad! I listened to the video (mostly) and shouldn't comment so late at night.
I thought you referred to the scope itself, not the batteries, gah!
I can still be wrong about the scope, correct me if I'm wrong, but I don't think Fluke rebranded Philips scopes were produced in Poland. I'll check the "made in..." label on mine when I'm back from work. I suspect Netherlands though, Philips being a company from there, but I'm not sure where they were actually put together in.
@@tomaszwota1465 -- Didn't you know "P" sounds like 'Hohh" in Australia?
@@poopytowncat Well, I had to watch Dave for years before I could even understand the Australian accent, but I'm still behind the curve it seems!
@@tomaszwota1465 -- If you believe my comment you'll be totally lost!
At 13:47 it's clear that the DIN41612 power board connector is not properly seated. Was that caused by shipping, or and eager Dave trying to pull the board out earlier? If shipping, could that contribute to the shutdown?
Don’t be surprised if it turns out to be a bad power switch. I have an old HP signal generator that does the same thing. It’s better having cycled it a few times, but I need to clean it up. I know it’s the power button because it had a few times wiggling the button got the power to rapidly cycle off and on. Had the same delay to failure. Of course, problems in the HV power supply could be going on, but you know how often it’s just a switch or the power supply.
No Y-OUT, which I will now conflate with TH-cam and decide that this 'scope is not for TH-camrs.
😅 hey, it's almost a pun.
Thanks Dave, Im dreaming about diferent model at ebay months but cant buy it because price... Now dream is gone, after your video prices reaches sky... 😂
I cannot wait till I buy myself a nice oscilloscope that is not dissimilar to this one for me to probe motherboards on computers and other PC PCB diagnosis. The comment about capacitors having reefer madness I made a comment on the Streetmachine TV about a particular shirt I seen for sale here in Adelaide which had a wacky tabacky leaf a vb logo on the side and a centrelink logo with a stupid slogan so I didn't get it. But capacitors popping on Motherboards I had one go near my face didn't cause any harm but made me jump that was for sure. Back in the socket A and Pentium 4 day type motherboards and around that era.
Well now we know why you got such a deal. Bap E caps or resolder some connections in the PS. Never repaired unit.
Maybe you will find the fault in an upcoming video. Well made unit despite some bodges otherwise Dave.
I look forward to the repair video. That scope looks great.
Noticed a bulging electrolytic at roughly the 3 o'clock position at 12:39. Might want to check that out.
the scope is actually a Phillips device. its rebranded as a fluke. if you look around for the phillips PM series you will usually find the fluke counterpart as well. all made in holland/netherlands in the phillips factories. if you look at even modern phillips medical devices they will have bascially the same colors, buttons and fonts as they did back in the 90's. phillips had its own semiconductor factory and design center. so there would be no reason to go outside for (most) parts when phillips was already on top and the chip design guys were a few offices down the hall.
Technical term...."Fuhbarred!" lol
1999...What a GREAT VINTAGE!
i have a PM3380B that does not work any more :(
HV psu is shot, no picture, high pitch buzz. but it beeps and bobs when i turn it on and push buttons and turn knobs etc.
My local college is selling a bunch of 3370B and 3390B models for 50 bucks each in near perfect condition.
Hi Dave,
This small, silver electrolytic caps - are for replace. Dont know who produce this crap, however they always looks similar.
I picked up a TENMA 6810 for about £50, for parts, fully working.
Still use the PM3390A and more than sufficient for MCU tests. For mine I can use trigger in for a third channel.
In your movie I did not hear the fan running. I had a PM3380 and that sound always annoyed me. It could explain the shutdown after some minutes.
If you had a thermal camera, I believe I've seen you use one, that would seem to be step one. The power supply is either sensing over temperature or overcurrent condition. Most likely.
3:09 Back when we still made stuff, except for ASML we only import and export stuff.
i used to sell these until they were no longer current product. yeah. that far back - i'm old. nobody bought these. i was offered to keep my demo unit, and i didn't even want it. these were not very good, honestly.
I'm in the market for my first 'scope, so this is like Manna to me.
One question: Would I need another 'scope to diagnose the issue on this one?
Try to use thermal cam when fixing it. That my hel you find some components that are overheatin after while :)
you are asking us not to confuse Austria with Australia but you confuse Holland with Poland...
well i guess its time to find out what's an eBay. but gushhhh that PCBs... chess pattern... have u ever seen anything like that anywhere? isn't that clever. wish to see the manual that came with it
Nice! I've got the 4 channel version. But its in pieces on the healing bench, half way through re-caping it. Fingers crossed! :-)
Mine has similar problem, after about 10 minutes warm up, it starts to reset, and the resets get closer together as the scope heats up.
if theres a thermistor in box c13 (i think) on power supply module, may be worth a measurement
@@azza-in_this_day_and_age How would this cause resets?
I have 2 theories:
1) an electrolytic is leaking and as it heats it pull the processor rail down, until it resets.
2) the processor or ROM has had too many hours and as they heat, one or the other gets corrupted and then resets.
I hope its theory 1 and not theory 2. 1 is fixable, 2 might be fixable if its the processor, but if its the ROM, its likely not fixable, as there are no sources for the code in these ROMs. :-)
@@mcconkeyb the thermistor, as the name would imply, can overheat and cause the circuit to open, if broken in a certain way, it would allow for a reset upon cooling. i ran into it on an hvac blower motor. the intermittent faults are always a challenge, best of luck in your diagnosing
@@mcconkeyb if theory 2, you might try re flowing the board before re-balling that processor.
That Asic looks a lot like old intel packages, (not only the ceramics, but also the writing style).
I'm seeing channels 3 and 4 silkscreened onto the acquisition board. I wonder if it can be converted to 4 channel version.
It's full of Phillips components because it's a re-badged Phillips!
Several PM3380B's (100 MHz) are available now for ~$200.
Why those vertical lines / slopes are so faint on that display? Is this a characteristic of old scopes versus modern full digital ones?
those bus connectors for the cards look a lot like the NuBus connectors use in the 68K Mac's that had slots.
What a beut!