Is is just the knob has broken (in which case, buy yourself a new knob and replace the one that's there) or is the potentiometer shaft broken too? That's a much bigger job, that involves pulling the whole amp apart and replacing the pot --- you need to get an electronics tech to do it.
Google
mg series knobs
to find replacements --- they just push on.
SOURCE: left input for loudspeaker is dead?
It sounds like the speaker output jack is broken or it has come unsoldered from the circuit board. You can fix this if you have enough electronics experience but you have to be very careful as components in an amp can carry a lethal charge even after being unplugged. You can partially discharge the capacitors by unplugging your amp from the power source with the speaker plugged into the working jack and set at a low volume while turned on ( not on standby ). If you feel at all uncomfortable attempting the repair yourself you are far better off taking it to a repair shop preferably one with experience with Marshalls. The same is true for other brands as well. Please let me know if this helps.
Testimonial: "thats what i figured thank you sir:)"
SOURCE: Marshall MG250dfx's sound fades out
I have read that the problem is in the FX send/return jacks which oxidize if not used much. All you have to do, apparently, is ram a jack plug in and out a bunch of times. This breaks up the oxidation, and allows the amp to work properly again.
SOURCE: ive just purchased a marshall mg250dfx amp and
Since you just purchased this, verify that your guitar and cables are good on another amp and if they are good, then exercise your warranty on the Marshall.
Connectors and cables for guitars are chronic problems so verify they are good to avoid looking foolish.
SOURCE: whats best settings for blues
Join this forum:http://www.marshallforum.com/marshall-amps/2682-marshall-avt-50xt-tribute-owners-please.html
SOURCE: I've had my Marshall MG250DFX
Well without testing a bunch of parts. I would say some component in the clean preamp has changed. It may have happened over time and now you are noticeing it. without checking all the parts it would be hard to tell. Get it to a service center. Or you may send it in to Pro Line Music
215-736-8055
239 views
Usually answered in minutes!
×