Question about Marshall Amplification Marshall MG250DFX 100W Guitar Combo Amplifier
No sound, however, power is getting to speakers/phones; evident by the bump as you switch the power
There may be thermal sensor that protects the power amp that is sensing over temperature and turning off the power amplifier stage.
Try cooling with a fan and see if it lasts longer. If you are obstructing the cooling in any way, try to avoid that.
As a test, leave on for an hour and THEN try driving sound. If it works for a while, then driving is what is overheating it.
VERIFY that you are NOT running too low impedance speakers!!!
Most amps will drive down to 4 ohms. That is a single 4 ohm speaker or two 8 ohms in parallel MAX.
Posted on Sep 09, 2009
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Posted on Jan 02, 2017
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