Marshall JCM2000 DSL50 Channel LED Illumination Question

[Enzo]

With TR1 off the board, there is no path for current through LED2, the red one, other than something outside the circuit. That can only mean things like contaminated board, or some unrelated circuit elements touching each other on the board somewhere.

With TR1 still out, measure resistance to ground from the anode of LED2, the point where the collector of TR1 used to be. Should read open.

[SYSDOA]

Resistance to ground from anode of LED2 measures as open.

[Enzo]

My apology, I meant to say cathode, the end tied to the transistor. In other words looking for any resistive path to ground the LED current might take.

[SYSDOA]

aww bummer, this case is closed, but will refer to this thread for notes next time. Thanks for all the replies.

[Mikeguitar]

JCM2000’s red light dim

aww bummer, this case is closed, but will refer to this thread for notes next time. Thanks for all the replies.

I have a jcm 2000 100 watt doing that,did you figure it out? Thanks