STC 830 Radio Restore - 1938 Part 1
ฝัง
- เผยแพร่เมื่อ 8 ก.ย. 2024
- I was asked to repair this gigantic STC 830 radio, "sure, it won't take long" I said. The owner then upped the ante and asked if I could do a complete restore to match the excellent job he had done on the cabinet... I toiled off and on for over 4 months on this project, it needed a complete strip down. In this episode I attempt to get the radio to at least work, something I am having little success with. I hope you will join me on this epic adventure.
Series Playlist: • STC 830 Radio Chassis ...
Buy me a coffee ☕:
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The radio Mechanic Channel:
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Radio Cruncher Videos: / radiocruncher
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• Practical Transformer ...
RetrObright:
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My Signal Tracer:
www.distrelec....
My Digital Signal Generator:
The Signal Generator is a project kit from a local electronics magazine called Silicon Chip, there is a sister publication in the UK called Practical Electronics, it was featured in the April 2018 edition but mine has a oscilloscope function as well which I don't use. There may be a later edition in PE with that feature.
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Eight valves. Wow that's what my dad used to call a room heater. See you on the next.
Haha... he wasn't wrong. Thanks Terry 😄
Whoever drew that original schematic must have been paid by the number of lines and non-terminated crossings. Great Video as always, Dave!
Haha... it was a mess, copied too many times I guess 😄 Thanks Adam.
What a battle.
You took on the biggest, baddest guy in the room and you have him on the ropes.
Look forward to part 2.
I hope it throws in the towel dogribmoon 😄
Hey Dave, thanks for letting us tag along. This adventure sure ha it's ups & downs!
You are tenacious and always get it done in the end. FOUR months? Now that is going the extra mile!!
Elapsed 4 months, not full time 😀 Thanks Craig.
Had a week from hell but this is the shimmering light at the end of it! Thanks David much joy has been had.
Sorry to hear that A Last, I hope things improve. Thanks 👍🙂
What a journey. Will it? Won't it? Yet another lunch break made excellent with a Radio Adventure. My tortellini was all the more fantastic. Thanks for yet another great vid!
Hah... thanks Steven 🙂
You did great troubleshooting that. The schematic was a nightmare. Great job getting it fixed
Thanks Ripley. Yes, the schematic was hard to follow 👍😀
Hello from Pittsburgh
Hello Peter in Pittsburgh from me in Brisbane 😀
HI Dave, back from Thailand in one piece . This one was a tough one, But you got there in the end. On to part two
Hi Phill, welcome back. I did it the hard way but it is working to a fashion 🙂
Great to have you back Dave with an interesting radio, what a great dial. It amazes me how robust old analogue electronics are, working just enough to allow you to chase the faults. I feel sorry for the Dave of the future trying to fix digital radios!
sad truth cars and electronics just like cars will likely be throw away as cars are fast becoming today!
Hi Dave, Yes, robust and made to be repaired. Dave of the future will go out and buy a new digital radio 😄 Thanks Dave.
I love your troubleshooting skill. I could have used your help about 1976 when I started in radio.
Nowadays I'm more a black box swapper than I am a tech.This reminds me of when you had got to actually adjust something physically and not rely on a computer to tell you if your repair was successful.
Thank you Tim. Working in the Airlines, it became pretty much box swapping and sensor replacement, and the box told us which sensor ☺️
Great job David.thanks 👏
Thanks Haytham channel 🙂
That one put up a fight alright. I had a similar vintage Ferguson that was also super-grumpy, with two or three faults that weren't what they seemed at all (and a circuit diagram that looked like Marconi had chundered up his spag bol supper). The final problem was a persistent mains hum that eventually turned out to be the shield of the audio cable from the volume control to the final AF carrying some filament current due to a corroded bolt on an earth tag. Lovely set once tamed, but it extracted its price.
It did and still does to the end. A bad earth, hard to trace a fault like that, good job finding it proudsnowtiger👍🙂
Always interesting to see you track down such problems and get them fixed. Gives me courage to keep going with mine.
Thanks for sharing, rough spots and all.
Thank you Joseph, I hope you have a smother ride with yours 👍🙂
Trying to remember all I see and learn. But do I have a lot to learn. Love watching your videos on all repairs
Thanks Maarten 👍🙂
thank you so much. Her unexpected breakdown very well resolved. All the best.
Thank you Jose 🙂
Thanks David! It is amazing and inspiring to see you chasing trouble and you got it in the end and also manage to change a "paine in the *ss" cap....
Thank you Leif. I found it in the end 😄
I always enjoy watching you tackle prewar sets like this. Was surprised it did not have more bands with that crazy large dial its got!
Thank you sgath92. Haha... yes, it could have easily fitted more bands on the dial 😄
Another excellent video. You mention you are self taught in this discipline. I'm sure it would be interesting to many to learn a little about your background and how you got into this.
Hi Peter? thank you. I was trying to keep a low profile but I could include a quick video on my past 👍🙂
Morning Dave ☕️
Good morning VRE 👍🙂
Hi David, I did a vibrator model of this same receiver for my first restore, it was an exceptional receiver this was in 1976 in country NSW we had a school radio restoration club (mainly to get inside when it was cold), I sold it to my science teacher, the only problem was 2 capacitors that were dead and one valve. Great to see another, I bet there are a few more problems with this one 47 years later. Thankyou this will be a fascinating episode.
A school radio restoration club, fascinating! Yes, this beast isn't going to let me off this easily 😄
Great work Dave. And Mega interesting as usual.
Thank you Paul 👍😀
Another great video David. Looking forward to the tear-down and cleaning. 73 de KB7ICI.....Bill
Thank you Bill 👍🙂
They have Bic 4 color pens down there too! I've been using them since high school in 1976! Going over this huge old
radio's causualty list (and one bad tube) seems to be the norm for something 85 years old! You are great at sleuthing
things out David. Yes those old square mica capacitors go bad. (Just watched Mr. Carlson's Lab and he found a couple
duds in a radio from post WWII era .) Got to check them all. Can't wait to see the progress to completion in part 2
Hi Steve, yes the Bics get here somehow, very useful device. I'm not quite as old as this radio and have a sizeable list of complaints myself so I expected a few hurdles but not as many as I encountered. I watched Mr Carlson and his wayward micas, his were under stress, mine just sits there kicking back 😄
Well that was fun. Work cut out with it. Looking forward to part 2. Wish you were doing the cabinet too though
Thanks Adam. I have some cabinet work coming up later in the year 👍🙂
Hi David 😊 watching this one again as I enjoy the more complex sets. I believe it was meant originally to have a metal type 6J7 as all other tubes on the schematic follow with the g designator. Hence the short grid cap lead. Also, a metal type wouldn't have needed a shield.
I suppose you are busy with Christmas business so all the best to you and family. Get your granddaughter some crayons with extra red ones. Happy 2024!
Yes, good point Daniel. That would explain the short grid lead as you said. It's a busy time of year. Thank you, all the best for 2024 👍🙂
G'day Mate. Thought you "Gone Walkabout". Great to have you back safe and sound. Thanks for the show.
Thank you Mr Bond. I'm still here, just trying to balance home life with TH-cam life 🙂
Nice radio, I've always liked them from that era they look and feel solid with big parts and lots of problems to sort.
I always check HT to Grid insulation in the IF cans having found a few that are dodgy under full voltage. Also that mica cap is a good example of a hidden trap, no leakage but lost capacity and sometimes noisy too.
Regards Jonathan.
Hi Jonathan, thank you. Good point with the IF transformers, I haven't had an issue as yet but good to keep in mind, thanks. The faulty mica was unusual, it was suggested it may have been affected by the large resistor mounted nearby 🤔🙂
Great job Dave. Mica caps are also known to play up and cause all sorts of problems. Given the age of the radio i would replace all of the mica caps while you replace the the paper and power supply caps. As for the main tuning gang you could try a ultrasonic bath, just remove all of the trimmers first !!. I will be looking forward to part two.
Hi Stephen. I have had a few micas fail, usually when there is high voltage on one side of them. An Ultrasonic bath wouldn't do much for this tuning capacitor. Part two has the capacitor err... 'treatment' 😄🙂
Nice one David!😊
Thank you Phillip 👍🙂
Always nice to see another old radio coming back to life after being left for dead. Can't wait to see the whole thing lit up and rocking like it was new, in your case better than new. Thanks Dave!
Haha... thanks Steve. I hope it starts rocking too 😄
Always a pleasure your videos !
" Be Seeing You" ! 👌
N°6
Thank you No 6 🏰😉
Love that Dial Dave !
It's a beauty Richard 🙂
Hey Dave. Your chasing that cap made me think of the old 'Operation' game I had as a kid 🤭 Regards Mark
Hi Mark, it was a bit like Operation 😂
Been awhile since I have had time to get into a radio, so good to sit and follow along 😊
Thanks Tim, I hope you enjoyed it 🙂
Great restored. David sir
Nice video thanks for the sharing this video sir.
Thanks Nath 🙂
I think getting an 85 year old radio to do anything at all when it's obviously been out of use for a long time is a major achievement!
Yeah, it was asking a lot I guess. Thanks Paul 👍🙂
You again made my weekend. Thanks Dave.
Thanks Manuel 😀
Hey Dave, greetings from a chilly UK..! Fab radio, what a dial..! Love all the fault finding and info, just so cool to follow..Great job so far, it's back to life..! Ed..uk..😀😀
Hi Ed, thank you. Stay warm up there 😀
always like your videos, watching this reminds me of an old rca 88-lf i got from an assets disposal sale. made in canada ww 2 vintage, what a beast, used to scare the hell out of me, i think the electric company used to love me when i powered that up, the landlord not so much.
Thanks Dave, Your RCA sounds epic 😄
Enjoying this voyage Dave! Watched this vid a week ago and forgot to comment! 😊
Hi Chris, thanks. I watch yours and not always in a position to comment 👍😃
the plates on the tuning cap sometimes have fine particles or hairs that tend to cause the scratchy sound I just run a business care through each just to be sure that isn't a problem and of course straighten the plates as you have done. As always its a joy to see you work on these old radios. I am going for my 3rd monthly 3 day Chemo Therapy session tomorrow and according to the blood work my numbers are returning to normal. Thank God the Chemo is working.
Hi Larry. Good idea Larry. The tuning cap gets quite a bit of attention in part two. I am delighted your treatment is progressing well, good luck for tomorrow. I am catching up your Enfield videos 🙂
Very good David as usual. You have learnt a lot about radio.
Thank you John, it's a slow process 😄
Hey David that's a nice looking radio and as always the job on restoring this radio looks like its an easy job for you
Thank you Sheldon 😀
Nice radio ! Glad to have you back !
Thanks Keith 👍🙂
Wow! A veritable can of worms. I admire your patience David. Looking forward to part 2.
Thank you Rod 🙂
Hey Dave this is a big job. Yes and those Chanex paper capacitors are all really super leaky by now. I’ve measured those .47uf ones at less than 1megohm and that’s with a multimere using 9 volts. I have a 1940 HMV console radio here with those and technico ones as well. The technico ones are not too bad actually. But they all need to go.
Hi Robert, it was a huge job this one, I wondered if I could even finish it at one stage. We don't see many Chanex caps around but like you said, they alll have to go. Thanks Robert 🙂
Cheers Mate!
Thanks patprop74 👍🙂
Thanks David, great to see a pre-war radio again!
Thanks owwcam 🙂
Greetings:
2 suggestions
1. To spare the life of the tuning eye, consider removing the high voltage from the target except when actually tuning. My thought is to use a 555 timed relay triggered by something to indicate a tuning is about to happen such as a drop in AVC level, band switch, tone switch, or added switch. Instead of removing the target voltage fully, maybe a rheostat across the relay contacts to limit the voltage to a point where the display is barely visible. (Should extend the display tube life I think).
2. If you build an inexpensive digital counter kit with a storable fixed counter offset, you will be able to monitor the local oscillator frequency (while displaying the tuned frequency) to avoid guessing the station you hear. If it works without a physical connection you can place it near any radio as a tuning aide. This does not rob you of your diagnostic cred's at all.
I am amazed at the expertise you've amassed over time. (Me nee 1950)
Hi James. Yes that would save the magic eye, good idea, automatic dimming sounds good. The frequency counter is also a good idea although I must admit I probably wouldn't use it. I have a sniffer but haven't tried it with the oscilloscope, it might work and wouldn't load the oscillator. We don't use frequency in Australia for AM stations, it was always call signs, most Aussie radio don't have a frequency display on the dial so I'm not always familiar with the stations frequency. Some good ideas there James, thank you 👍🙂
Only yesterday I checked your channel as I realised I hadn't seen anything for a while. Well it's good to have you back, you've been missed. A fantastic looking set and now starting to sound good too. Looking forward to seeing more updates on the STC. Cheers
Good thing you checked Ken. I am taking a more relaxed video output routine, easier for me. Thanks Ken 👍🙂
Thanks
Thank you kindly Maurice 👍🙂
Nice repair, got a stromberg carlson 51A11 i am currently tackling
Thanks @HDXFH. Good luck with your Stromberg👍🙂
Always a great video. Good to see you as well. Hope you are doing well.
Thank you Midnight Wind. I'm good thanks 🙂
Nice vídeo, great job...
Thank you Valdir 👍🙂
Terrific stuff
Thank you Richard 👍🙂
Another great video, it's interesting to learn about various different faults in older valve radios. I think that mica cap on the padder may have failed because of heat from the dropper resistor nearby. Although mica is a very good conductor of heat and generally is very good at electronic insulation, it can fail over time (a very long time) and start to breakdown. Mica caps are very thermally stable, holding their value and typically used in oscillator circuits for that reason.
Thanks Radio-Ged. You may be right about the mica, very odd that it went so bad 👍🙂
Excellent journey so far - your process, as it usually is, was certainly "smooth" enough for me!
Thank you Skip 🙂
Awesome as always Dave!
The production quality and your troubleshooting skills are excellent!
I enjoy watching very much!
Thank you Daniel 🙂
What a great project, I love sets from the 30's. I have no doubt that the finished chassis will do justice to the restored cabinet 👍
Thanks markpirateuk, wish me luck 🙂
Looks like 👍 you’ve got another kind of radio 📻. Don’t run this radio 📻 with loose tube socket bases, in case there’s a chance for fire 🔥. I hope 🤞 the dial cord is good 😊. I think 🤔 the speaker 🔊 is permanent magnet 🧲. Your friend, Jeff.
Hi Jeff. The radio is safe from fire, I hope. it doesn't have a dial cord thankfully, it's direct drive. Thanks Jeff 🙂
Nice work. Looking forward to part 2
Thank you Wayne 🙂
NIce radio Dave !!
Thanks Serge 🙂
Skills David, not education is key to make such an old beast walk again. And 4 months of your time of course, the boring details 🥱 Hope we'll see the marriage of cabinet and chassis in the end.
Thank you Erik. I don't have the cabinet but the owner supplied some photos with it installed in the case 👍🙂
Glad you are back Dave. Interesting you had a Mica cap issue. Mr. Carlson has a series going and he also encountered 3 Micas that were giving reception issues. Always something new to encounter and learn from. Really enjoy your work, Cheers.
Hi Davis, I watched Mr Carlson's video this morning. I was impressed with his Heathkit tester, that showed the fault up beautifully 🙂
David another old Steam Radio under repair My location in Goulburn the last AM station radio National closed down 3 weeks ago the shared the facility with 2GN we had 2GN there for over 90 years it was part the AWA network it was great station just everyone listen to it
Sadly the Transmission facility we be sold the land but 2GN has moved to FM as Radio National so if want listening to Am station you have good Antenna connected to you radio
You being Queensland near city of Brisbane have no problem with AM bands the old STC was picketing up plenty of AM stations
Good Luck with refurbishment I think the owner is in NSW ,Ian,
Hi Ian, that's sad they closed the transmissions down, very sad. We still have a number of AM stations in Brisbane and most large towns still have an AM station, for how long I don't know 🤔 Thanks Ian.
David diğer bölümleri sabırsızlıkla bekliyorum
teşekkür ederim Mutlu👍🙂
Just as a suggestion, you might want to put a drop of oil on those condenser bearings to smooth out "fine adjustment" while "fingering" the tuning..........
Hi Scott, good suggestion, thanks, I applied grease to the ball bearings and a drop of oil to the thrust ball bearing 🙂
Great as always sir. Thank you 😊.
Thank you Phil 🙂
Great progress. Seeing you replace that capacitor in the RF section felt like I was watching surgery. 😄
Looking forward to the next video. I bet it's gonna be an impressive restoration again!
Hi Kristof, it was a bit medical, clearly it was the first component mounted on the chassis. Thanks Kristof 👍🙂
Nice bit of fault tracing Dave.
From what a few friends have been telling me, reliability of older mica capacitors is now coming into question. Normally, as a general rule, I replace all capacitors valued over 1nf, especially electrolytic capacitor types, but now I suggest testing all capacitors irrespective of their value, application, and composition.
Voltage/audio tests can be applied to all resistors also, especially carbon composite types. Irespective whether they test within tolerance or not, they can internally arch, therefore can be a major contributor to those usually frustrating intermittent faults.
I agree with you, where’s the fun, or satisfaction from doing one huge swap-out? Tracing faults before doing a few swap-outs at a time always contributes towards achieving an interesting, and worthwhile repair/restoration.
Loved watching this video, cheers my friend, Phil
Hi Phil, I went off in the went direction there for a while but got it in the end. I have had a number of mica capacitors fail, particularly if they have high voltage on one side. I was surprised this one had done so. I agree with you re resistors, I have had a few noisy ones. I have built myself a sniffer as you suggested some time ago, I haven't used it in a video yet, it will be interesting to see how well it works when the time comes. The other issue with doing a bulk component change is if the radio doesn't work afterwards you have compounded the problem by possibly introducing the error during your work. Surprisingly most radios will offer some form of life done under the protection of the current limiter. As always, thanks Phil 🙂
Very good close up camera work in this one Dave! That old radio had a lot of problems and you seemed to breeze right through troubleshooting it properly. That one would have stumped me for a good long while.
Thanks Jeff. It was tough going there for a while 🙂
Love the dial on this one Dave.
I have seen a similar set as a mantle radio im sure. But it may have also been a cut down radio as we know how that happens sometimes
Hi 1974UTuber, yes it's a colourful dial and has the famous STC radio tower on it. I don't know if it was produced as a table model but STC produced a lot of radios with a similar looking dial, Thanks 1974UTuber 🙂
A great surprise this morning, a new dose of Dave! Nice to see a set from the 30's. Love tubes with top cap Grid connectors. With RF amp and two stage IF it should prove to be a strong performer once cleaned up and aligned. Look forward to part 2.
Hi De Mus, thank you. Very simply, it is a very simple CRT. The anode (plate) is coated with a reactive luminescent material which lights up when electrons strike it. The electron flow is disrupted by a control electrode leaving dark areas on the display. But controlling the voltage to the grid the shape of the display can be controlled allowing more or less of the display to be illuminated. AGC voltage is used to control the grid, so a strong signal will allow more green display to show. You can probably find more complete info online 🙂
thank you for sharing
My pleasure خالد عطايا. Thank you for watching 👍😀
Persistence pays off again! Awesome work as usual. I wonder if the cap in the oscillator section absorbed humidity over the years and went our of spec. Maybe even the metal foils inside corroded? It might be interesting to cut it open and do an autopsy...
Hi Linus, yep, got there in the end. I didn't think to cut the cap open, I don't have it anymore unfortunately 😟 Thanks Linus 🙂
I guess it just goes to show that even the normally most reliable components eventually die. Great video as usual. I'm really looking forward to the chassis restoration. I'm sure with your magic touch it will look amazing.
Thanks Ian. I agree, none of these parts can be trusted after 85 years 🙂
27:39 High leakage turns a capacitor into a resistor. High ESR means the capacitor part is still OK but it has a resistor in series making it less effective.
I thought that is what I said, sorry, I must have misspoke. Thanks Nick 🙂
Excellent as always Dave 👌. Can't wait for part 2.
Thank you Terry 👍🙂
always entertaining David... and a master class in fixing the weird and wonderful
Thank you Chris 👍🙂
Well done Dave..... That unit reminds me of a Zenith here in the states.. Excellent job so far !!
Hi Ron thank you. It is big enough to be a Zenith and it has enough tubes as well 😄
Great project! Looking forward to part 2. 😃
Thank you Ola 🙂
Great! Will watch this later.
Thanks Paul 👍🙂
Loved your fault finding, very impressive. Not sure if this is fully true about STC radios, they tend to stuff components in areas which is impossible to reach
Hi Khaled, thank you. This STC was tricky to work on but to be fair it had a lot stuffed in there 👍🙂
Always a pleasure to watch you videos, looking forward to the next one. England.
Thank you Maurice 🙂
That radio did trip you up a little, but it's a bloody mess underside. easy to mistake things.
I would have been cross eyed and wanting to run away :-D
The earth strip that keeps the vanes grounded may not be 100%
Sorry i havnt much to say, a brain fade day.
Hi zx8401ztv, yes, I did go down the wrong path with the speaker, power going in and not coming out it must be the speaker field coil, a quick check would have proved that it was OK. The radio gets stripped down so all that is removed and refitted later. Thanks zx8401ztv 👍🙂
Excellent as always, looking forward to the next installment!
Thank you Lockdown Electronics 🙂
Hello Dave, so interesting to watch you trouble shoot this one, i tried to ''guess'' the possible issues and fixes as i was following along, pausing to think here and there, but the only thing i got right was the motor boating part. Well i mean i instinctively thought replacing the cap was the solution. Seems to me your getting quicker and quicker to spot the problems every time i watch you work. I also agree with Jeff Crane about your close up camera work, must have been tricky to set up and light the scene, but also hearing the squeaking of the adjustment screw made it seem like i was holding the screwdriver in my hand. Well done mate ! 4 months into this project you say ? My god i'm sure it will be amazing yet again. Can't wait to see the next videos. Be well, God bless.
On my end i'm still waiting for vacuum tubes to come in from the U.S., been over 3 weeks now, package being stuck at the border for some reason and i sure won't order more stuff until i get and test them that's for sure...
Hi Raymond, you did well with the motor boating then. I was surprised when the hidden paper capacitor didn't fix it but thinking later I should have known it was unlikely. The cameras take an age to set up but I'm used to it. The elapsed time was 4 months, I did it in my 'spare' time. Shipping can be painfully slow 😟🙂 Thanks Raymond.
@@DavidTipton101 Yes of course i quite understand it's 4 months into it, but not continuous work. Funny i talked about my vacuum tubes shipment being delayed, they got here yesterday, despite the tracking info stating the package was still in transit somewhere. I started testing the lot and so far so good they all test better than the originals from both sets. Tomorrow i'll start creating my capacitors/electrolytics and resistors list, it will be quite a puzzle for me as i'm expecting not being able to get all the capacitors to the same values of the time, but i'll do my best to match everything as close as possible.
@@raymondmenard5444 Generally, you can go up a value with capacitors, particularly the electrolytics. Keep to the same voltage or greater and you will be fine. The paper caps often match up pretty well, perhaps the odd man out is the 0.5uF, 0.05 etc, drop down to 0.47uF, 0.047 etc. Good luck 😃
@@DavidTipton101 Indeed thats how i understand it, besides many original as well as some of the already replaced caps (in the 70s i'm guessing) are at 0.47 uF. Maybe it'll be easier than i thought, i'm going to start the list and ordering in a few minutes after my 1st coffee of course. On the website Just Radios they seem to have everything with a ton of infos and a handy mFd to mmfd to pF etc conversion chart. One small safe step at a time right ?
@@raymondmenard5444 Right 👍🙂
Did radios in North America have magic eyes? They look so cool!
Hi Shannon, absolutely, most manufacturers used them at one time or another 😃
Hey David...That radio has a great dial...... dont remove the lettering when you clean it 😜HA!.....1938 had some nice looking radios. I see you already punched a hole in the speaker. 😂😂 cheers🍺🍟
Hi Buzz. I am not going near that dial 😄 I agree, it was the golden age of style. The speaker came pre-poked, saved me the trouble 🙂 Thanks Buzz, I hope all is well with your Philco 59 👍
@@DavidTipton101 The Philco 59 has been slow going.....been kind of lazy lately....just goofing off....ha 😂😂
I love magic eyes........
Haha... me too 6A8G 🙂
Sir next part video i waiting sir.
Friday Nath 👍🙂
Geez, looks every single cap was a dud. Speaking of caps, my electronics knowledge is marginally better than basic so I can follow along with most of what you're doing. A couple of weeks back I watched a video of a guy repairing an electric guitar and he replaced a couple of "bumble bee" caps which to me, for all intents and purposes just look like big resistors. I could skim over a circuit that has bumble bee capacitors all day long and not know they are actually capacitors not resistors. Until that video I had never heard of a bumble bee cap and I don't think I've ever heard you mention one in any of these old circuits you do.
Learned something new that day. Looking forward to the speaker repair.
Hi Ellesmere, So many caps in this set and all replaced. The 'Bumble Bee' caps are a Sprague product I believe, I guess they didn't make it into Australian sets or I haven't seen one at least. They do look like resistors, quite tricky for the uninitiated. The speaker is a mess, thanks Ellesmere 👍🙂
nice wireless
Thank you Ian, it's quite a beast 🙂
😀👍
😄👍
Hi Dave, welcome back. Just saw the video and I was wondering how the magic-eye works. Which signal and /or voltages are connected to it to fully light up when a station is selected? Thanks.
The artwork on my radios tuning glass looks interesting, those wild Australian artists.
How did your coil winding machine work out Dave?
Hi Mack, we did like our dials to look interesting didn't we 😄 The winding machine is progressing, I am waiting on a part which has taken the long way to get here. i hope to get it working soon. Thanks Mack 🙂
Hi Dave,
I wonder if STC was connected to RCA over here in the states? Some of the features strongly resemble RCAs I have restored. Thanks for sharing your troubleshooting adventure. I have been struggling with an almost identical fault in a Zenith.
Regards
Dwayne
Hi Dwayne. STC is a British firm but I remember some connection to a US company as well. Of course, we used to simply pinch ideas from other manufactures, who would know on the other side of the planet 😄
@David Tipton
Dave,
This video really helped me out. The Zenith I mentioned was mute after a complete recap, very similar to the fault you had in the beginning. I traced and retraced every step with no result. After watching you trouble shoot, I gave it another go. She sings loud and strong now. Thanks.
Regards
Dwayne
@@dwaynemohr3076 Good to hear Dwayne 👍
Hi Dave, I can't recall...have you ever shown a build on your signal generator you use in this episode? Nice little gadget. Any chance of pointing me in the direction for where you got plans to build it?
Hi zorka4098. No, I built the generator before TH-cam. In the description under my later videos is a link to the generator article. It has the info you need 👍🙂
Just a side-note to the title-cards "Did this radio go down with the Titanic" click-bait question: If yes, there is an international agreement in force to protect the culturally significant wreck site. So you would be in very big trouble.
But as the above one is a very silly (or misleading) question, because the condition of the device is without any doubt easily identifiable to have not been exposed to any saltwater in its lifetime, there is no reason for that assumption or better: allusion made by the author.
Anyways, good work and thanks for restoring this beauty that in no way needs any reference that could be loosely connected to some grave-robber or disaster tourism mentality.
(I know I know, there is excited discussion going on since decades about the Marconi Equipment on the Titanic ... as in every good family who discusses if Granny should be dig up, because her wedding ring would give such a good memento for future -degenerates- generations, hehe)
Yes, I will be in trouble with the authorities. That is a normal statement by me when I see something in poor condition in an attempt to inflate its current decrepit state even more. I didn't realise it would bring the rath of the international community 😨
I wasn't aware of interest in Marconi's radio equipment or granny's ring. I need to get out more 😄 Thanks Jedzia Dex.