Center channel cuts out. Tap on side on cabinet & it comes back on. not loose connections.

Try to check voltage input. Because when we increases the bass or volume it takes more power to modulate.. this might solve your issue..

In answer to your question...Yes. It's very likely a dry solder joint or capacitor breaking down.

There are bad solder connections on the circuit board inside the receiver, if you are handy with a soldering iron remove the top part of the case and trace the center channel speaker wires to the board, this will isolate the problem in the general area, chances are it is the center channel ic that need to be retouched.

Did you ever fix this problem? I am having the same issue. I pulled the speakers and checked all the connections which seem fine. Funny thing is that when they do cut out, if I tap the side of the speaker panel that particular side will come back on as if it is a loose connection.

I have had the relays fail on these. Try tapping on them to issolate. Larry's Electronics [email protected]

Make sure that when the audio from the speaker cuts, the headphones are still working (try it several times). If this is correct the problem isn't at the preamp or driver tubes. Try to locate the wire that is connecting the speaker with the amplifier. There must be a bad connection at this cable or at the speaker's coil itself. Try hiting with a solid tool (the back of a screwdriver for example) the parts and the connections (not the tubes, just the mountings) while the amplifier is working in order to locate a loosing contact. Once you find it use a soldering gun to fix the connection.

In case of a problem or clarification, don't hesitate to post.

Thanks and regards
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Stelios
direct FixYa link: http://www.fixya.com/users/technical114

loose connections,issues. disconnect center and front speakers from this receiver. turn on with rear and subwoofer. horrible sound but the point is it will eliminate the speaker issues and confirm loose connection if the receiver continues to behave the way you described.I have repaired a few for loose connections.

connect right channel speakers to amp left out if the problem fixed you will have a problem in amp itself.
if the problem remained you will have a problem in speaker itself test first with new cable and second with speaker cabinet,

try using another speaker for the center channel and the left speaker, also watch your ohm load, most of the want a 4 ohm load. try to narrow it down to see if it is the speaker or the amp.

You don't have an external amlifuer, do you? You could hook the pre-amp out for the center channel to an external amp and connect the speaker to the amp. That way you could determine if it is the center channel output or the internal amp. Either way you probably need to get it serviced.

Best Regards,

-James