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

Рет қаралды 2,763

Күн бұрын

Пікірлер: 80

@prattacaster 17 күн бұрын

You can fix the drift issues by going to extremes but I love that you are taking the time to design a proper PCB. I did the same thing with the Blues Jr, both PCBs. It takes a lot of time and effort

@MrDiscomfortzone 3 ай бұрын

This will solve a ton of headaches for technicians and amp owners. Looking forward to the day when the boards are available to order. Thanks for your unwavering dedication to the profession!

@chrisgoblin4857 3 ай бұрын

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.

@alexdeleon7135 3 ай бұрын

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.

@aquilarossa5191 3 ай бұрын

A tech lifted the curcuit on my DSL 2000 by cutting traces and hand wiring that part of the board. That was mid 2000s, so the amp went bad very early in its life. The band-aid fix worked well at the time, but that it would become leaky over time in other places on the PCB makes sense. I got another 12 months use out of it before trading it for a brand new Randy Rhoads amp that blew up several days after arriving in NZ. I wonder if the 1959RR had the same problem, because it went into full melt down mode in much the same way. Massive damage. I will not go near any JCM 2000 amps now; unless perhaps the seller shows evidence the board has been replaced by somebody I trust. Sure, Gary Moore used them and sounded fantastic, but he could get spare amps from the factory in Milton Keynes (where I grew up, so I have more than one nostalgic reason for liking Marshall -- nostalgia is not a rational thing though huh). P.S. The best amps Marshall have made since 2000 might be the 1987X and the 2203X. Not super expensive like the 1959HW, but they sound pretty much like the real deal and seem to last. I might be wrong though. How's the PCB with the ones made during the 2000s? I also think the new made in Vietnam DSL40 is okay for the money. The DSL20 too. That Lambchooper channel fella over the ditch there got good sounds and service from his for ages. They cheap out in ways, but they do sound good and seem to last -- for the most part. I might be wrong there too of course. That's one reason I watch channels like this. To find out the pros and cons with various amps out there. The Psonic vids on the issues with Fender reissue amps is another. I also like laughing at Mesa. Players that own them think they are the bee's knees and their gear is so much better quality than everybody's else's, especially the Mesa owners who also own a PRS. Not that I can be stuffed arguing with them. Just knowing they're oblivious to how they've consumed snake oil and are boasting about supposed quality is satisfying enough 😆 (I should not be laughing mind you, because I was had by the Randy amp - but their snobbery makes them fair game).

@sunday.76 Ай бұрын

Great video-thanks for sharing! I’ve had to fix more of these than I’d like to admit. The only real solution has been replacing the entire board with a better-made one from Marshall. Since upgrading the board on my personal 1998 DSL100, it’s been running well, and the bias has stayed stable. The amp gets gigged regularly, but I’m always a bit nervous it might fail eventually due to the original design issues. I’ve also got a friend’s JCM2000 DSL100 waiting for a new board. When these become available, I’d love to grab one. Excellent work on this! subscribed.

@buckwalker 3 ай бұрын

You’re out there doing the hard work we didn’t know we needed yet. Thanks brah!

@jeissonvanhalen 3 күн бұрын

I have a JCM2000 DSL 100 that has the Bias Drift problem. Here in Brazil you can't find this type of replacement board. I hope I can buy one of these to revive my amplifier. I really like the sound of the 2000, it has an incredible timbre! I'll wait for the availability to import one of these boards! Thank you!

@vintageguitaramp_guitarteacher 3 ай бұрын

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.

@Michael-gx1cg 2 ай бұрын

This is awesome! Can't wait to purchase one for my sick '99 DSL50.

@TheMorganOrgan 3 ай бұрын

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

@ThiagoSforcin 3 ай бұрын

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

@pabcrane 3 ай бұрын

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.

@joemcgraw5529 3 ай бұрын

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

@Satchmoeddie 3 ай бұрын

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.

@jonfai 3 ай бұрын

Hey Brad when are these gonna be available? I’m in need of a tsl board! Thanks!

@KevinR242 3 ай бұрын

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 3 ай бұрын

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.

@K707OR30 3 ай бұрын

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

@AllanWoodrum 2 ай бұрын

I need this bad !!! Marshall just told me I was shit out of luck on a board for mine can you send me a price?

@Mikey__R 3 ай бұрын

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.

@rustymohican8280 3 ай бұрын

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?

@vaccarioou22 3 ай бұрын

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

@weschilton 3 ай бұрын

You're a legend, Brad! Well done!

@Mark70609 3 ай бұрын

Good stuff Brad. The mod boards sound interesting too.

@stalkereffects3668 3 ай бұрын

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 !

@nigeltrueman5931 3 ай бұрын

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 ай бұрын

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

@pacocasanovas1605 3 ай бұрын

it happens with the JVM-Series too.....mark my words (I had approx. 10 issues with CAF-failures over the past 12 months)

@BradsGuitarGarage 2 ай бұрын

I'm assessing one tomorrow morning, so we shall see if that's the problem. Join us on the live stream at 7am AEST if you have time, mate. It'd be fantastic to see you there!

@Splattle101 3 ай бұрын

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

@GMA-Local 3 ай бұрын

Absolute fucking legend.

@screamengine 3 ай бұрын

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

@bambule5268 3 ай бұрын

Finally a solid solution

@simongotlieb2560 3 ай бұрын

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 3 ай бұрын

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.

@TKsGuitarandAmpRepair 3 ай бұрын

Hell yeah! That's amazing work

@jamescassidy4045 3 ай бұрын

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 ай бұрын

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

@RyoCanCan 3 ай бұрын

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.

@will5150 3 ай бұрын

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.

@IainThacker 3 ай бұрын

Champion!

@aminahmed2220 3 ай бұрын

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

@faultlessguitarsandamps1116 3 ай бұрын

That's very clever indeed ,

@kevinbrownbill167 Ай бұрын

Hey Brad I live I Spain .. I need a board for a dsl JCM 2000 . 1998. my amp is giving major problems. I wanted a fully populated board as I am not an engineer however I do have a guy who understands these things. When will you have these available to buy any ideas.best regards Kevin

@BradsGuitarGarage Ай бұрын

Keep updated on the channel, Kevin. Subscribe and enable notifications and I'll put out the word as soon as the first batch is ready for sale.

@kevinbrownbill167 Ай бұрын

⁠I will do Brad. Thanks mate

@TheFsharpm7 Ай бұрын

You're doing the Lord's work. Have you received the protos?

@BradsGuitarGarage Ай бұрын

Yes, and the first batch of production PCBs, too. I'm trying to get the repairs done so I can get them assembled.

@TheFsharpm7 Ай бұрын

@ wonderful! I picked up a dsl 100 half stack for $400 and plan to throw it in storage until you have those boards available for purchase.

@andrewhenderson9474 3 ай бұрын

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 ай бұрын

I'm a janitor with a soldering iron.

@andrewhenderson9474 3 ай бұрын

@@BradsGuitarGarage So you don’t have formal education

@BradsGuitarGarage 3 ай бұрын

Not in regard to electronics, no.

@BenState 3 ай бұрын

@@andrewhenderson9474 i have, and brad knows more than i was taught at uni. Brad's too humble, but the truth is he knows a f-load/

@TheWolvesCurse 3 ай бұрын

will you ship these fully populated ones to germany?

@BradsGuitarGarage 3 ай бұрын

When they are ready, absolutely!

@TheWolvesCurse 3 ай бұрын

@@BradsGuitarGarage i was sympathizing with buying a TSL, but after watching a couple of psionic audios videos, i became quite hesitant. bought an Engl Powerball 2 instead, found out that techs usually think Engl amps to be badly designed too, but so far i can't complain, thing works like a charm. TSLs are avaliable on the used market here for 200-300€, which is what makes them tempting.

@pihuey 3 ай бұрын

I need one of these badly and I also have a second jcm2000 dsl 100 I would be willing to trade for a board or two

@enisguitars3676 3 ай бұрын

Thank you legend

@conjering 3 ай бұрын

Hey Brad, I have a DSL100, I can populate the board here and test the amp if you would like to send me a board. I'm in USA

@johnwilliamson467 3 ай бұрын

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

@BradsGuitarGarage 3 ай бұрын

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

@maxvockner 3 ай бұрын

F You Marshall😂 nice work!

@thatampguy 3 ай бұрын

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 ай бұрын

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.

@GhostfaceGriller-hd7jw 3 ай бұрын

Those look 😎

@GhostfaceGriller-hd7jw 3 ай бұрын

Getting the Led out👊😎

@swaffy101 3 ай бұрын

I need a new board for my dsl401.

@BradsGuitarGarage 3 ай бұрын

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 ай бұрын

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

@rocket69218 3 ай бұрын

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!