Questions & Answers for: marshall amp troubleshooting

...solder connection, a bad component, etc. If you are not confident in opening the amp and troubleshooting it yourself, take it to a audio repairman. Marshall's are some of the easier ones to

marshall 100dfx mg series... it is blowing fuses... its tranformer is needing replacement... i need to get a new one for this amp . who can set me up? thanks john There are MANY more likely components

...amp is one of these and heated up enough sitting there that could be your problem. In any case I would recommend having it serviced. There are sources on the internet for the schematic but unless you ...

When turning my Marshal MG250 DFX on, there is a terrible buzzing sound. I have tried it on different speakers and the buzzing still occurs. It does not change in volume when i adjust the volume. ...

Marshall Electronics V-R72P-2C. All LEDs are lit, with no displays. Any ideas of problem, or how I could troubleshoot? I would first try the fuses. There is a 3 amp, surface mount fuse on each board.

...Marshall VS232 amp. My volume is all the way down, and the gain channel isnt on either. What is the problem? If this happens when guitar cable is disconnected, take unit in for repair. This should be ...

...amp. I am using the Marshall 1553 cab w/ one 15" and 2 10" speakers. Any suggestions? Here is a link to your schematic: http://elektrotanya.com/marshall_bass_200w_3520.pdf/download.html ...

marshall troubleshoot valvestate 2000 AVT150 COMBO, Amp turns on works great on clean channel but no sound on OD1 & OD2 unless turned up to 9 or 10. First check the preamp valve in that curcuit

marshall amp troubleshooting when i turn it on just now it is making a high pitch wail like it is going to blow up with or without the guitar plugged in Does anything happen while you turn the knobs ...

...Marshall MG30 DFX amplifier is experiencing a hardware issue. The noise you're hearing when you turn it on and off could be caused by a malfunctioning component in the amp's power supply or switching ...