Look at the amplifier for your subwoofer. I expect it is the same model. If so, take out the bad amp and put the one from the subwoofer in its place.

Make sure all the switches on the back are set the same as the original and double check the wiring to be sure you got it right. This will get your surround channel working again until you can get the dead one repaired. You don't need the subwoofers as much as you need the surround. Provided everything else in your system is working correctly you will be able to get by without it. Most people probably won't even notice. If this is an important movie or if it's in your best house take the subwoofer amp (if it's the same) from another smaller house or less important movie.

Take the bad amp write down the model and serial numbers and call your service department, warehouse or technician. Have them get you a P.O. and send the thing off to be repaired. In a few weeks you'll get your old amp back, all repaired (or refurbished). Reverse the procedure to put everything back where you found it. You're back in business!

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Is this the first time this amp has done this?
It's common for them to exhibit the symptoms on an intermittent basis. It'll do it when it's hot, for instance, but it will be okay after you turn it off for a while. It could last for a few minutes, hours or even weeks until it does this again. As time passes it will occur more frequently until it gets to the point where it won't go away.

On one occasion I got peeved off, shouted some choice words and gave it a thump on the side. The noise stopped immediately and didn't reappear for over a month! (Fonzie Power! )

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Assuming nobody likes to play inside of your rack Randy is probably right about the amp needing repairs. Just to be sure though, disconnect the inputs to the amp and see if it makes any noise. This will tell you for sure whether or not it's a wiring problem like Darryl mentioned (actually to be totally sure connect the high and low ON THE INPUT ONLY together and see if it still makes noise).

On a few occasions I have had ground hums appear out of nowhere after years of clean audio. I've also had auditorium dimmers (and stage dimmers) start to cause ground hums (and loud buzzes) in a system before. Best way to do it, shut EVERYTHING off but the processor and that single amp and see what happens. Who knows you might get lucky and the amp might be OK.

But like Randy said the amp's probably in need of repairs.

Also don't forget to make a note of the settings on an amp that you may 'borrow' from another channel so that you can restore it to its original setting when you put it back.

Good luck!

Daryl

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A KIWI eats,roots & Leaves.

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