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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 stehno

stehno
1,453 posts
 
Sounds like a problem I encountered a while back. At first, I thought it was the cdp, then perhaps the preamp.

So I started to zero in on the problem using the process of elimination.

1. Switch the left and right ic connectors at the source (cdp or tt) only. Did the problem switch channels?

2. If it switched, then continue on by along with step 1, now also switch the L & R ic connectors at the amp only. Did the problem switch channels again?

I don't have my notes handy to be accurate with the deductions, but performing the above steps as well as substituting another set of ic's into the mix, would help eliminate one or more components and/or ics.

In my case, it turned out to be the right channel interconnect used between my cdp and preamp that had a questionable connection.

-IMO
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