Hello, I'm playing on a Marshall DSL40CR on the OD2 channel with the channel LED indicator red and footswitch plugged in. Once in a while the amp will simultaneously drop the volume to zero, the LED channel indicator on OD2 turns green, and the volume and footswitch are unresponsive. It's happened twice now, and it will fix itself if I completely shut down the amp and restart it. Does anyone have any idea what this could be? Thank you!
Sounds a bit like the mg series problem with head phone socket bypass connection clagging up with carbon or not making good connection. Try plugging and unplugging a jack in the headphone socket
You think the amp is bypassing output to the speaker to the headphone output? I'll give it a try, thanks. But why would the footswitch quit?
Welcome to the forum, there is a dedicated thread for your amp, you will get far more, traffic and responses in the official dsl40cr thread! Cheers new brother
"Once in a while the amp will simultaneously drop the volume to zero, the LED channel indicator on OD2 turns green, and the volume and footswitch are unresponsive." A. That would indicate that this is not the headphone jack problem. The channel switching is accomplished by IC 4 (AT2313). This IC operates on 5 VDC.
@Bjornson18 .. what Amp Mad Scientist posted is what controls how your Footswitch Presses should change channels and stuff …… The Footswitch could be to blame or the IC ( Integrated Circuit ) could be to blame … even the Jack where you plug the Footswitch In being dirty could be to blame …… He has actually provided you with the Official Service Tech recommendation …… Make sure that 5Volts DC is present at the Amp's Footswitch Plug
May be different due to the additional IC for MIDI but the concept is the same …… Multi Volts ranges triggered by The Footswitch for the IC to see
