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Loss of volume in right channel

I've noticed that my system is intermittently losing volume in the right channel. Usually starts out fine when the system is first turned on. Plays well for a while. And then the right channel will suddenly cut partially out (never a complete loss of volume). Then it will come back again. Also, I occasionally hear a sizzling noise in that channel.

I checked my source equipment, and the problem remains consistent with the right channel, so I'm pretty sure it's not my CD player (most often used source). Speakers are in good shape. Swapped pre-amp/amp cables, and problem remains the same, so it's not a cable problem. I'm thinking the problem is in the pre-amp, which has had a couple of "open" circuit problems in the past. Any thoughts ? Thanks.
bothrops1b81

Showing 1 response by ketchup

ketchup
688 posts
 
Crazy, I'm going through the same exact thing right now (but in the L channel).

After about 5-10 minutes the left channel cuts out and begins to vary in volume. This is sometimes accompanied by static coming from the speaker.

Stehno's method is almost exactly what I did which helped me determine that my amp was faulty. When I switched the ICs on the amp end only, the problem remained in the left channel. When I switched the speaker cables on the amp end only, the problem switched to the other speaker. This told me that the speakers were ok, the source componentes were ok, and the amp wasn't. At any rate, the amp is now on its way back to the manufacturer.

BTW, what amp are you using?

http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1088111795&openusid&zzKetchup&4&5#Ketchup
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