Marshall MG50DFX amp headache

[charlie]

Hello to all the guitarists out there. Just wanted to drop a line or two about an amp I bought a couple of years back. It is a Marshall MG50DFX. Solid state, 12" Celestion speaker, built-in FX.
Worked great for about 2 years, and then it died on me on a gig and I have not been able to get any sound out of it all. The amp will come on. Channel switching is fine. But, NO VOLUME at all. Anybody out there ever have a similar problem with this amp or any other. I have contacted Korg who handles warranty issues for Marshall, and they have been helpful to a point, but I have to show proof of purchase through a receipt and as of yet, I have been unable to find the receipt. If anyone knows what to look for when something like this happens to an amp, I would love to hear it.

Thanks,

Charlie

[thingyy]

Step 1 check to see if there is a speaker protection fuse blown.
Step 2 try another speaker.
Step 2 come back to us with the results of these steps.

[ovation99]

Hi, try this if you have another means of amplification or something that can accept a line signal, such as a hi-fi, tape deck, mini-disk recorder etc.
Your amp has an FX loop and therefore if you put a standard jack plug into the "send" socket and the other end of the leadd into your hi-fi etc. you should hear your signal and in doing so, you are intercepting the signal betwwen the pre-amp and power amp of the Marshall.
If you get a sound out of whatever you plugged it into, will indicate that the power amp/speaker side is the problem.
This procedure may also work with the headphone/line out socket.
Another way to test if it is the power amp/speaker side, is to plug your guitar or another audio source into the "receive" socket of the effects loop, although your guitar will be very quiet, it will show if the power amp side is working. If you get sound out using this method, it will indicate that the pre-amp side is at fault.
Come back and let us know how you get on.

All the best

[Steptoe]

Charlie, take it to an Amp tech and get it repaired properly.

Cheers
John

[charlie]

Hey guys,

Thanks for all the tips to try out. I bought that amp about 3 years ago and never had any trouble with it until it died on a gig. I will let you know what happens.

Thanks,

Charlie