Question about Marshall Mg100dfx 100-Watt Combo Guitar Amplifier
If you put in headphones in the amp headphone output, and there's a sound, it's probably the output amp (IC1 - TDA7293V) that's bad from the fan failure, if not cooled proberly failure is doomed to happen. Replace fan and output part, and you should have an amp up and running again.
Posted on Nov 17, 2011
Something has probably failed or become a bad joint. If you turn up the gains and volume to max is there any hiss or hum from the speaker? If not there will be a problem in the power amp or power supply. Check fuses at back. The speaker may be open circuit too, that is easy to check with a multimeter. If you can't get far yourself, you'll need a repairman.
Solid state amps are not that reliable these days, there are so many things that can fail due to all the effects that people demand to be built in. Look at how many people are reporting problems with ss amps here.
Posted on Apr 02, 2011
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Posted on Jan 02, 2017
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