"Alex C" wrote in message
om...
I have had a Sony STR-DE875 amplifier for nearly two problem free
years. It now seems that a couple of channels are dropping out
occasionally predominantly with the centre speaker although there is a
very noticable degredation of sound accross the the front three
speakers.

I have done the test tones when the channels have dropped and the
centre one is completely missing at this point.

There is also an intermittant audible "click" when the unit has failed
much like the click when the unit is switched on.

I do have two units on top of the amp (sky and dvd) but these have
always been there and have not caused any problems in the past. I have
seen a few messages that mention overheating but why would the unit be
overheating now and not before.

Many thanks


Alex

Check the pre amp ic's for dry joints