PROTOTYPES EN-ROUTE! - JCM2000 100W Head Replacement PCB's

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/ @bradsguitargarage
Webpage: www.bradsguitargarage.com.au
Facebook: bradsguitargarage
Instagram: / bradsguitargarage
Equipment:
Soldering:
Pace MBT station w/SX100 & PS-90 handpieces
Hakko 474 w/815 handpiece
Hakko 936 w/907 handpiece
Hakko FX-888D w/FX-8801 handpiece
Quick 861DW hot air station
BOFA fume extraction unit
Loctite Multicore solder (C511 / 362)
Test Equipment:
Fluke 11, 175, 177 & 179 handheld DMM's
Tektronix 2236 analog oscilloscope
Rigol DS-1054z digital oscilloscope
BK Precision 4017A sweep / function generator
BWD 160a function generator
HP 6236B triple output DC power supply
Kyoritsu 3132A insulation / continuity tester
Video equipment:
Overhead cam: Panasonic HC-V785 w/Audio Technica AT9946CM mic
Handheld cam: Panasonic DC-G85 w/Olympus M.Zuiko Pro 12-40mm f/2.8
On location cam: Panasonic DC-GH5s w/Panasonic-Leica 9mm f/1.7 & 12-60mm f/2.8
Capture card(s): Magewell HDMI USB, ATEN UC3020-AT, ATEN UC3021
Headset Mic: Audio Technica BP892xcW-TH
Lapel Mic: Rode Go
Editing: Adobe Premiere Elements
Hand Tools:
Wiha, Felo, Stanley screwdrivers
CK & Engineer cutters / pliers
RS Pro wire strippers
Sidchrome & Gear Wrench spanners, sockets & shifters
Veritas planes & chisels
Materials / Consumables:
JJ's / TAD electron valves
Elixir / Ernie Ball / D'Addario / Rotosound strings
Electrolube & DeoxIT cleaners, lubricants & chemicals.

Опубликовано:

17 сен 2024

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Комментарии : 56

@alexdeleon7135 3 дня назад

See a need, fill a need. You're brilliant, you bloody champion! I do know many artists who refuse to part with their DSL, and TSL heads. This will quell their concerns, and all other concerns worldwide. My sincere thanks and admiration, mate.

@pabcrane 3 дня назад

It's quite disappointing that Marshall didnt notice the issue before commercial release. However one can forgive them for thst - worse that they didn't recall and immediate revision or provide a better solution. I suppose that was prohibitively expensive. Its fab that you and Jace from Headfirst are offering a correction for some of these poor design choices.

@chrisgoblin4857 3 дня назад

Class work Brad. I've already had a board replacement on my JCM2000 but knowing you're working on the upgrade fills me with a lot of hope I can keep using this DSL of mine for another 20 years.

@vintageguitaramp_guitarteacher 2 дня назад

Hello Brad. Those look great. A guy came to me with a TSL100. He had bought the Dr Tube bias mod kit and asked me to install it. I installed it, once I had sorted some previous work done on it by Bodge it and Scarper. It worked okay but I did warn him he may get other problems later down the line. It was a sticking plaster fix. I decline the JCM200s normally as there is no proper fix for them. Well it looks like there is now! You are one hell of a tech Brad. Take care.

@joemcgraw5529 3 дня назад

Well done Brad and im sure all your hard work and designing will pay off

@ThiagoSforcin 3 дня назад

I've replaced a few JCM2000's boards and I'm interested to acquire a couple PCBs ... Waiting ...

@TheMorganOrgan 3 дня назад

Wow, many talked about it - you did it. I can’t imagine the time this has taken you to put together. Top job ❤🎸🤘🏻

@KevinR242 День назад

This is brilliant the same problem happens on the dsl 40. I used to tell people that the board was conductive and they were telling me I was crazy.

@tbonesullivan День назад

I LIVE the Marshall saga. My TSL100 combo was great for years, but finally went bad last year. I've been dragging my heels on it, and then I heard they stopped making them. This at least gives me some hope that eventually I can get a real fix.

@GMA-Local 3 дня назад

Absolute fucking legend.

@K707OR30 3 дня назад

This is awesome! I did manage to buy a couple rev20 boards so my tsl100 is functioning normally, but with better components, pcb quality being much better, fly back diodes, etc; I may just have to buy one of these anyway and swap it in. I’ll keep an eye out for them

@weschilton 3 дня назад

You're a legend, Brad! Well done!

@Mark70609 2 дня назад

Good stuff Brad. The mod boards sound interesting too.

@nigeltrueman5931 3 дня назад

Excellent news Brad. Let us know how to get on the purchase list Brad, I've been repairing lots of these by pcb replacement for a while (totally agree its the only fix) but have now ran out of Marshall issue 20 pcbs and have other customers contacting me still seeking a fix.

@BradsGuitarGarage 3 дня назад

Shoot me an email, mate. I'll get you on the pre-order list.

@Splattle101 3 дня назад

Great work. This is a great idea, and I hope it works out for you. Awesome stuff.

@faultlessguitarsandamps1116 3 дня назад

That's very clever indeed ,

@vaccarioou22 2 дня назад

Great job - pity that M couldn't have done it right in the 1st place 🙂

@Satchmoeddie 3 дня назад

I tried using a Genrad insulation test bridge on a JCM2000 board. It was about as stupid as testing a piece of very badly burnt toast. Sometimes stupid is fun. It was kinda fun, in a burnt fiberglass aroma sort of way. I wish I'd done it with the lights out. 1000 volts DC finds a lot of faults.

@jamescassidy4045 4 дня назад

Does anyone know if Marshall ever "fixed" the issue, or technically fixed the issue after a certain year? I thought I remembered hearing some shit about that. Sick job Brad, that's awesome!

@will5150 3 дня назад

i think they revised the board and eventually fixed the problem. but owners of early 2000's got screwed if the board failed. check out lyle's (psionic audio) video on the dsl 2000

@screamengine 3 дня назад

I want it! TSL100 here. Working good but time is ticking indeed. :)

@stalkereffects3668 3 дня назад

Hello Brad, well great job ! Intelligence you i would it the first french customer ! 🎉❤ I need to follow with accuracy your publications ! Best regards and good job !

@TKsGuitarandAmpRepair 3 дня назад

Hell yeah! That's amazing work

@rustymohican8280 2 дня назад

You're the man Brad! Does the DSL 50 have the same issue? If so, is there any plan to create a board for that model?

@IainThacker 2 дня назад

Champion!

@bambule5268 3 дня назад

Finally a solid solution

@aminahmed2220 3 дня назад

Absolutely awesome have a wonderful weekend also Sunday is my mom birthday Brad ❤😊

@Mikey__R День назад

It sounds like this problem could happen to any amp where the power valves are direct soldered to the PCB? For my own amp, I'm leaning further and further towards turrets on a phenolic board, with totally separate boards for the preamp and power amp.

@enisguitars3676 3 дня назад

Thank you legend

@will5150 4 дня назад

they sound good when they work. if anyone saw a recent video of joe satriani touring with Sammy Hagar I'm pretty sure joe was using a 2000 on stage.

@maxvockner День назад

F You Marshall😂 nice work!

@simongotlieb2560 День назад

Excellent news. I have a TSL100 combo (with an Issue 20 board) and a DSL50 (with the original board) so keen, as an amp tech, to see what can be done with these boards, especially as I dread it when a JCM2000 comes in with issues. Is it worth doing a 50w board too Brad? I assume this board with alternate BOM should work - it seems to be like that on the DSL50. Will follow this with interest.

@BradsGuitarGarage День назад

I need to get my hands on the 50W version for assessment and testing. I believe that again, they are the same PCB with select component footprints left unpopulated.

@RyoCanCan День назад

This is fuckin awesome! What would you recommend as a first step for amp design? I've used kicad before for mechanical keyboards so I'm fairly used to it but need to learn some amp/pedal design.

@andrewhenderson9474 3 дня назад

Great Video Mate. Just as interest what is your background in Electronics.Do you have a Degree or Electrical License . Keep the great work up mate.

@BradsGuitarGarage 3 дня назад

I'm a janitor with a soldering iron.

@andrewhenderson9474 3 дня назад

@@BradsGuitarGarage So you don’t have formal education

@BradsGuitarGarage 3 дня назад

Not in regard to electronics, no.

@johnwilliamson467 3 дня назад

uf 4007 much quieter than in4007. Nice board there mate.

@BradsGuitarGarage 3 дня назад

Yes, good point. I meant to change them. I've only got like 1000 UF4007's in stock!

@jimgibson9811 3 дня назад

Champion

@GhostfaceGriller-hd7jw 3 дня назад

Those look 😎

@GhostfaceGriller-hd7jw 3 дня назад

Getting the Led out👊😎

@thatampguy 3 дня назад

Let me get the romantic stuff out of the way - thank you for your contributions to the community. I think this is your strongest attribute, aside from the beard.

@BradsGuitarGarage 3 дня назад

Man, I just got a beard trim and the new fucker took like 2/3 off the length. I feel naked and my face looks round.

@swaffy101 3 дня назад

I need a new board for my dsl401.

@BradsGuitarGarage 3 дня назад

The TSL60 and DSL401 are a complete system on single PCB boards. They still cook though, worse in the combo versions with the heat rising to heat the PCBs as I'm sure you've discovered. However, there are too many obsolete and expensive parts on them required to fit the existing amp assembly to make them economical to produce unfortunately. There were also way less of them the produced. I think I've only had 1 or 2 DSL401's and 2 TSL60's in my whole career, but lost count of the TSL/DSL100's that have come through.

@swaffy101 3 дня назад

@@BradsGuitarGarage so what you are saying is dump it or turn it into a 1974x? Lol

@rocket69218 2 дня назад

I don't know where you are in the world but here in the UK you can buy 401's combos for £250 (what I paid for mine) I like mine a lot (and owned it for 10 years) but when it's time comes, it won't be economically worth repairing. It's been great though, It still has the original valves too!