1999 JCM 2000 DSL 50 head channel stuck on lead channel B, no led lights, effects loop not working all out of the blue


I just purchased a 1999 JCM2000 DSL 50 in mint condition .  It worked for an hour great no issues.

Turned everything off and came back later to find the following:

Channel led lights do not light.

Pedals in the effects loop have no effect.  Just had a Fortin Zuul in the loop.

Cannot change the channel with footswitch nor the front panel channel button. 

I do get good signal out of the cab but am stuck on the lead channel.  

All the tone stack controls work fine.

I can change between lead 1 and lead 2. 

I have pulled the chassis and inspected fuses and all seem good. 

Nothing looks burnt on the boards nor did I find any loose connections.

I removed all connections so only the cab was connected and have same issue. 

Any suggestions before I take it? 

I thought the effects loop would have still worked being I get signal out of the cab. 

Very confused as I have never seen something like this before. 

asked 31 Mar 2023 at 11:06 AM

Mike Schreiber
Answers: 1


Hello Mike,

Regarding your DSL50, without seeing the amplifier it is hard to  diagnose, we would recommend that you have it looked at by an engineer, to see service centers in your area please go to our webpage www.marshall.com and click on local retailers.


Kind Regards


Marshall Support

answered 06 Apr 2023 at 02:05 PM

Loading - please wait...
This site uses cookies to improve your experience. By continuing we assume that you're ok for us to store cookies on your device. You can change your cookie settings at any time, or delete cookies, by going to our cookie consent page.