Mark. This vid was really helpful. I own one of this units and it was blown away during a blackout. Turned out the very same components you had to replace were 'toasted' in my unit. The mosfet and that very same diode. I purchased "close enough" spare parts and voila! Unit repaired. Thanks a lot!
Just repaired my Nova System. Same diode and transistor. Thank you for the video. Not only very helpful but entertaining too! Greetings from Kiel, Germany.
Mouser is 140 miles from here in Texas USA. I like their engineering department. If you have a part you cant source they will check it out for you have what you need the next day. During my years I would need only a small order at times. They never complained.
This power supply is the same as the one used in Tannoy TXD-1 audio processors! I've repaired many and the main culprit is the large smoothing cap (don't forget to discharge as it holds 400V!!) The outputs are +15v, -15v, +5v and +3v. The smaller caps go quite often too and strangely - my last repair was the same Diode! thanks for a great vid! Bravo!
Man you saved me with this video. Exactly the same thing happened. Transistor and diode to be replaced. It's good that I can replace it myself, otherwise I would have to pay PLN 200 for the entire power supply. Sorry for my English but I'm from Poland and I'm using a translator. Thank you and best regards.
Just discovered your show, and it's amazing how simple cheap pieces that fail that inevitably push electronics to the scrap heap, keep it up. Cheers from Cleveland, Ohio and should you ever want to visit these parts reach out I've got a few airbnb to set you up for a night or two. In trade for the time spent putting your videos together.
Binged all your videos. Excellent work! I’d like to request vintage synthesizer repair videos. You’re skills would translate into fantastic videos for synths. Other professional recording audio gear as well. Looking forward to all of it.
I've been working my way through all your videos over the past few days. They are very well made, interesting and informative. Thanks for taking the time to make them and for sharing your knowledge. 👍
Another great repair video, Mark! I love it that you left in the sequence where you dropped the heatsink paste-covered transistor into the board - hilarious; we've all been there! 😄
I just repaired a Voicelive unit today - exactly the same faults. I managed to get the mosfet off eBay but it was expensive. That fuse did a really good job and prevented further damage. I have a Blackstar HT pedal which also uses an smps - no onboard fuse resulting in a big toasted section on the PCB.
Good video. With boards that have sockets on the rear panel, I like to do those screws and nuts up first so the board is flush with the panel. Then do up the ones inside. That way there's less stress on the board being pulled into alignment with the rear panel.
First vid I've seen of yours, im digging it. Please consider using a smaller aperture like f8-f12 to make the focus hunting less drastic. Focus blur is nice but doesn't seem necessary in this instance
Cheers for the advice. Although I think you overestimate my ability with the camera. Its a Sony ZV1, and I just point it at stuff. One day I might find time to have a play with the manual settings.. Thanks for watching!
Get in. Get out. Get it off the bench. That's the day job right there. Nice work. And send it back cleaned. Yes. Totally agree. Thanks Mark. Always a pleasure to watch one of your vids when I actually should be repairing stuff! OK. Back to the bench.
T.C. ELECTRONICS are a quality company when it comes to sound processing. My friend designed some of their products and also ran a studio in Germany. Makes you wonder why they have design flaws from the perspective of the repair engineer. But it's common to use a screwdriver that has an angled bit for these jobs. But I guess it happens with cars too - awkward to carry out repairs for some. I worked as a gas engineer and we never repaired anything at component level. Lots of wastefulness in the gas trade.
Hi Mark good video. Please please be aware of the glue that’s on the circuit board over period of time goes hard and crusty and creates resistance which causes these problems whenever you see this glue in a dark state remove it. It creates a lot of problems especially in switch mode power supply’s
This Caused my Subwoofer Amp to behave weird... It ate through a Resistors Leg... Removed the glue everywhere on the Board and replaced the Resistors. Works like it should again :)
Nice job Mark. I bet you're glad you checked the secondary for shorts. I'm guessing your new switching transistor together with who knows what would of let out the blue smoke if you didn't. I've seen some people use lightbulbs to help prevent psu melt down when they have trouble finding the fault. But this being all through hole makes things easier somewhat.
Thanks! That was an easy one to be honest. I’m not a fan of things going bang, so my test socket is fed through a few things: isolation transformer, into a variac, through some light bulbs, through the ammeter, then to the test socket. The bypass switch is used to bypass the light bulbs for heavier loads. Most of that stuff lives under the bench, out of sight.
@@MendItMark Jesus, that's one hell of a safety setup. I should of known you had all the bases covered. I wish I had that mentality. I just stick wires into the mains sometimes if I'm not bothered, lol.
Hi mark, i love your channel, learned a lot, i have a question what exactly do the light bulbs do on your wall with your ac supply, is it some kind of soft start or power drainage? and how are these wired up? Love to find out.
I know nothing about electronics, but i found i watched this all the way through....really interesting and a nice manner. Cheers Mark. I wonder if you sold the Nova drive on......or if someone sent it to you to be repaired for them?
Another great video. Thoroughly enjoy the education. Do you have any thoughts as to why these little components fail or is it mainly just cheap components ?
So many possibilities! Power surges, manufacturing defects, component spec drifting over time, poor product design, cheap power supplies with poor regulation...
Stumbled upon your video. Your expertise level and ability to explain 'on the go' are amazing. As an owner of a TC Nova System I also have a question: the control knob seem to be rotary encoders. With time they seem to get less responsive. In your expertised opinion: is this similar as with normal potentiometers? As in: could I use contact cleaner, or should I take other measures?
I don't really know, but I would imagine that rotary encoders would be solid state and have no contacts. But I would apparently be wrong:-) th-cam.com/video/lylpr1anaLg/w-d-xo.html "How To Fix An Erratic Amplifier Rotary Encoder Volume Control"
I have one of these......some how it lost it's memory and I had to reflash the EEPROM. I had to purchase a special dongle to do it. decent sound, maybe a bit processed...the Pink Floyd presets are dead on...
Thanks for a fantastic video. I love the sound of this unit. But I had reliability issues with it. Is there any way of making them more roadworthy? I found the foot switches unreliable too.
I use general anti static foam cleaners, like one from RS components. However, consider that they might clean off some markings and paint ( see my Technics SU-V90D video to see it go wrong). Just, don’t leave them to ‘soak’ too long, as any reactions will be worse. Test a small area first for bad reactions. In general, more modern mixers use better inks, which don’t rub off.
"It's quite a big one..." that's what she said, mate! 😁You'd be better off applying the heatsink transfer compound to the heatsink, rather than the device (assume all plastic here). Less messy!
Its an Antistatic Foam Cleaner. I use several brands, depending what is the best deal on the day. Currently using Electrolube AFC400.... I reckon they are all the same.
being new to electronics repairs.. Im confused... When you inspected the mosfet with multimeter.. You said 15 ohms, etc.. Its shorted... I was under the impression that 15 ohms on an electrical component, Or, even readings in K ohms, was not a short?!? I thought closed to 0.... 1-2 ohms etc, Is a short?!?!?!
Hi Mark… which is the best repair shop in Chicago? My Way huge mod and my boss oc2 need to be repaired…are you in Chicago… or can please suggest someone in the US Thanks
hi have a acc with RS i will say they put up the price of the shipping it's now £30 for free post there was some small parts for my teac 80-8 deck under £10 ad on vat and post costs it's would be £20 so beware
Always a bit disheartening to see manufacturers slapping the lowest tier of El'Cheapo power supplies in their otherwise nifty digital gear. Nice repair!
These are much, much more serviceable than anything TC puts out nowadays. Great job Mark!
Mark. This vid was really helpful. I own one of this units and it was blown away during a blackout. Turned out the very same components you had to replace were 'toasted' in my unit. The mosfet and that very same diode. I purchased "close enough" spare parts and voila! Unit repaired. Thanks a lot!
Just repaired my Nova System. Same diode and transistor. Thank you for the video. Not only very helpful but entertaining too! Greetings from Kiel, Germany.
"Top Trumps for geeks" - you've just taken me right back to my childhood Mark!
With each of these videos I watch, I learn something new.
You are an artist! In the era of throwaway kit this is a breath of fresh air
Mouser is 140 miles from here in Texas USA. I like their engineering department. If you have a part you cant source they will check it out for you have what you need the next day. During my years I would need only a small order at times. They never complained.
Mouser and Digikey FTW (though Digikey seems to be changing a bit recently...not sure if it's for the better, but time will tell)
This power supply is the same as the one used in Tannoy TXD-1 audio processors! I've repaired many and the main culprit is the large smoothing cap (don't forget to discharge as it holds 400V!!) The outputs are +15v, -15v, +5v and +3v. The smaller caps go quite often too and strangely - my last repair was the same Diode! thanks for a great vid! Bravo!
Tc electronics and Tannoy: Same owner, so that makes sense.
Man you saved me with this video. Exactly the same thing happened. Transistor and diode to be replaced. It's good that I can replace it myself, otherwise I would have to pay PLN 200 for the entire power supply. Sorry for my English but I'm from Poland and I'm using a translator. Thank you and best regards.
Techmoan directed me here, and for good reason, too. Always a joy to see a bit of gear come back to life.
Just discovered your show, and it's amazing how simple cheap pieces that fail that inevitably push electronics to the scrap heap, keep it up. Cheers from Cleveland, Ohio and should you ever want to visit these parts reach out I've got a few airbnb to set you up for a night or two. In trade for the time spent putting your videos together.
I have no idea about none of what you’ve done was looking for videos of this pedal board and ended up here 😆. I enjoyed watching the whole procedure.
Binged all your videos. Excellent work! I’d like to request vintage synthesizer repair videos. You’re skills would translate into fantastic videos for synths. Other professional recording audio gear as well. Looking forward to all of it.
I once had a dream where Mark worked on an CS-80. One of the coolest dreams i'v had :D
Legend! Wish we had a man with your skills my neck of the woods. Pleasure to watch, rock on! 🤟🏻😎
The most sympathetic presentation of all. It´s real fun to watch. Great knowledge, experience and wonderfull light-hearted.!!!!!!
Loving the cleaning at the end. Sounds like 30 grit sandpaper! 😂 Another good job Mark 👍
That's a very nice guitar effects unit. TC Electronic is a highly respected company.
My lead guitar player has the version with a valve preamp in it. Very versatile unit!
I've been working my way through all your videos over the past few days. They are very well made, interesting and informative. Thanks for taking the time to make them and for sharing your knowledge. 👍
Lovely nice to see repairing stuff components,save it good job..
no idea, but I love watching mark explain stuff I have no idea about :)
Great job, service with a smile!
Another great repair video, Mark! I love it that you left in the sequence where you dropped the heatsink paste-covered transistor into the board - hilarious; we've all been there! 😄
so true!
I just repaired a Voicelive unit today - exactly the same faults. I managed to get the mosfet off eBay but it was expensive. That fuse did a really good job and prevented further damage. I have a Blackstar HT pedal which also uses an smps - no onboard fuse resulting in a big toasted section on the PCB.
Good video. With boards that have sockets on the rear panel, I like to do those screws and nuts up first so the board is flush with the panel. Then do up the ones inside. That way there's less stress on the board being pulled into alignment with the rear panel.
Thanks
Great detective repair again Mark! I’ve seen almost all your videos in the mean time😂
Good morning friend, I love your videos, I admire good technicians like you, always a like, your work well done with love....Marcos do BRASIL..
My favorite youtube channel:)
I enjoyed watching your troubleshooting mind looking for clues and solve it!
Datasheet comparison = "Top Trumps for geeks" amazing! : 0
I had a TC Nova Delay fail dead a few years ago. It was before I got into electronics so it went in the bin. Bet I could fix it now.
I was waiting for you to pull out your guitar for a proper test ;)
Excellent work.
As usual Mark! Great job, nice pedal by the way!
very nice repair Mark,i look forward to your videos...please keep them coming.
I have another type of TC unit with this same issue. Excited to see if I can fix it 😁
Great job
Cool repair!
One of the best TC pedals ever except the clean bleed on the overdrive 😂
Well done Mark. Like your stuff.
I so enjoy your philosophy .
Great video Mark!
First vid I've seen of yours, im digging it. Please consider using a smaller aperture like f8-f12 to make the focus hunting less drastic. Focus blur is nice but doesn't seem necessary in this instance
Cheers for the advice. Although I think you overestimate my ability with the camera. Its a Sony ZV1, and I just point it at stuff. One day I might find time to have a play with the manual settings.. Thanks for watching!
Wish I was in the UK, Mark is the kind of guy you want to take down the pub for a pint.
Where are you? I'm feeling thirsty
Get in. Get out. Get it off the bench. That's the day job right there. Nice work. And send it back cleaned. Yes. Totally agree. Thanks Mark. Always a pleasure to watch one of your vids when I actually should be repairing stuff! OK. Back to the bench.
This is not his day job.
Hola , muy buena tu manera de explicar los problemas electrónicos,da gusto ver los vídeos.Saludos desde Chile
Thanks 😎 Scotty
T.C. ELECTRONICS are a quality company when it comes to sound processing. My friend designed some of their products and also ran a studio in Germany. Makes you wonder why they have design flaws from the perspective of the repair engineer. But it's common to use a screwdriver that has an angled bit for these jobs. But I guess it happens with cars too - awkward to carry out repairs for some. I worked as a gas engineer and we never repaired anything at component level. Lots of wastefulness in the gas trade.
Good job! 🎸🙂
It is good to check the gate turn on voltage of mosfets.
Some are made with a lower voltage to work with logic levels.
Hi Mark good video. Please please be aware of the glue that’s on the circuit board over period of time goes hard and crusty and creates resistance which causes these problems whenever you see this glue in a dark state remove it. It creates a lot of problems especially in switch mode power supply’s
This Caused my Subwoofer Amp to behave weird... It ate through a Resistors Leg... Removed the glue everywhere on the Board and replaced the Resistors.
Works like it should again :)
Yes it's true. LG set had similar yellow glue and in monsoons it used to conduct and caused malfunctioning.
I came across this by accident. I have zero skills in this stuff. That was fascinating wizardry, thank you so much.
Nice job Mark. I bet you're glad you checked the secondary for shorts. I'm guessing your new switching transistor together with who knows what would of let out the blue smoke if you didn't. I've seen some people use lightbulbs to help prevent psu melt down when they have trouble finding the fault. But this being all through hole makes things easier somewhat.
Thanks! That was an easy one to be honest. I’m not a fan of things going bang, so my test socket is fed through a few things: isolation transformer, into a variac, through some light bulbs, through the ammeter, then to the test socket. The bypass switch is used to bypass the light bulbs for heavier loads. Most of that stuff lives under the bench, out of sight.
@@MendItMark Jesus, that's one hell of a safety setup. I should of known you had all the bases covered. I wish I had that mentality. I just stick wires into the mains sometimes if I'm not bothered, lol.
@@MendItMark it'd be great to see a video about your safety setup and why it is required 👍
Great job!
I see that you the person who can fix my parametric equalizer Apex 109 and my Tascam tape CD recorder.
I just got a very similar issue with the PSU but in my unit only the secondary side SB240 went off. I replaced it with a 1n5822 and it works fine now.
Finally i have seen a use for those dessert glass jars that clutter my cupboard ;-)
Hi mark, i love your channel, learned a lot, i have a question what exactly do the light bulbs do on your wall with your ac supply, is it some kind of soft start or power drainage? and how are these wired up? Love to find out.
I know nothing about electronics, but i found i watched this all the way through....really interesting and a nice manner. Cheers Mark. I wonder if you sold the Nova drive on......or if someone sent it to you to be repaired for them?
All of my repairs are for real customers. That’s why I get such a variety I guess!
I own many tcelectronic pieces and their fairly rare failures have ALL been the SMPS, often easily replaced as a unit.
I liked the just pressing stuff test. Just because you could fix a helicopter, it dosent mean you could fly it 😅
Another great video.
Thoroughly enjoy the education.
Do you have any thoughts as to why these little components fail or is it mainly just cheap components ?
So many possibilities!
Power surges, manufacturing defects, component spec drifting over time, poor product design, cheap power supplies with poor regulation...
even the most expensive components sometimes fail.
"This is like Top Trumps for geeks". Brilliant
Want to have a go at my Digitech JamMan looper pedal Mark? All works except the audio feed from the input through to the output.
Stumbled upon your video. Your expertise level and ability to explain 'on the go' are amazing.
As an owner of a TC Nova System I also have a question: the control knob seem to be rotary encoders. With time they seem to get less responsive. In your expertised opinion: is this similar as with normal potentiometers? As in: could I use contact cleaner, or should I take other measures?
I don't really know, but I would imagine that rotary encoders would be solid state and have no contacts. But I would apparently be wrong:-)
th-cam.com/video/lylpr1anaLg/w-d-xo.html "How To Fix An Erratic Amplifier Rotary Encoder Volume Control"
Hi. What's the spray you used to clean the unit at the end? Love your videos, keep them coming!
RS Electronic Cleaner
Old parts can be soldered from old circuits, this is not a problem.
Play it Mark….😊
"Top Trumps for geeks" 😀 been there a few times!
I have one of these......some how it lost it's memory and I had to reflash the EEPROM. I had to purchase a special dongle to do it. decent sound, maybe a bit processed...the Pink Floyd presets are dead on...
In the automotive buisiness a proper repair is not only to replace the faulty components, but also look why they were defective...
Thanks for a fantastic video. I love the sound of this unit. But I had reliability issues with it. Is there any way of making them more roadworthy? I found the foot switches unreliable too.
I remember the Trace Elliot solid state amps that sounded great, but died every 5 minutes.
Good job man. What cleaner can you suggest to clean front panels and faceplates? I have a couple of mixers that need a good cleaning.
I use general anti static foam cleaners, like one from RS components. However, consider that they might clean off some markings and paint ( see my Technics SU-V90D video to see it go wrong). Just, don’t leave them to ‘soak’ too long, as any reactions will be worse. Test a small area first for bad reactions. In general, more modern mixers use better inks, which don’t rub off.
"It's quite a big one..." that's what she said, mate! 😁You'd be better off applying the heatsink transfer compound to the heatsink, rather than the device (assume all plastic here). Less messy!
Again! Mr.Engineer save a musician's!
Cant you tell from the voltage range at the back (100-240v) that its switchedmode?
Why put the heat paste on the transistor? Don't you want the transistor directly touching the heat sink so it'll dissipate the heat?
Mark, what type of spray cleaner do you use on the outside of the case of the pedal?
Its an Antistatic Foam Cleaner. I use several brands, depending what is the best deal on the day. Currently using Electrolube AFC400.... I reckon they are all the same.
What is that spray foam? Name or brand
Look at your equipments and parts, imagine how long and difficult you setup your workshop
What is the fuse rating used?
being new to electronics repairs.. Im confused... When you inspected the mosfet with multimeter.. You said 15 ohms, etc.. Its shorted...
I was under the impression that 15 ohms on an electrical component, Or, even readings in K ohms, was not a short?!?
I thought closed to 0.... 1-2 ohms etc, Is a short?!?!?!
Hi Mark… which is the best repair shop in Chicago? My Way huge mod and my boss oc2 need to be repaired…are you in Chicago… or can please suggest someone in the US
Thanks
Was the audio recorded through a wax cylinder or is my phone broken
Hello . I have a Pod GO and the display is white. What could be the reason ? Can you help? Apart from that, everything works as it should. Regards Tom
8:59 Drill a hole through the transformer for your screwdriver.
Hi Mark. What kind of diode did you use? Greetings from Oslo.
heyyy overwiter error in my boss GT-1 , only white screen, no booting, no sound, any solution?
power failure is a common fault on these. I have had 3 units and they have all failed the same way!!
The SBD was Silent But Deadly to this power supply....
Tolong kirim alamat tempat servis efek gitar digital G1X nya ya pak
I know you’re not a neurosurgeon,but if I ever need one,I’ll ask for you ..
hi have a acc with RS i will say they put up the price of the shipping it's now £30 for free post there was some small parts for my teac 80-8 deck
under £10 ad on vat and post costs it's would be £20 so beware
I stopped buying from RS years ago for that reason
Always a bit disheartening to see manufacturers slapping the lowest tier of El'Cheapo power supplies in their otherwise nifty digital gear. Nice repair!
Honestly Mark . Is there anything you cant repair lol
"It's like Top Trumps for Geeks..." 🤣
Con un alimentatore lineare sarebbe stato molto più affidabile. Quello switching fa ridere....