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MCS 3210

I have a nice vintage receiver that has been recapped both channels and power supply.  The left channel is still weak.  No apparent distortion just weak.  The right channel is strong and clear.  Any ideas on where I should look next.  The unit is in great condition and I would like to get it working.  Both power amps have also been replaced.

 

Thanks

gsranch
corelli
1,059 posts
 

Need more info.

does "weak" mean decreased volume?

did you clean volume, balance pots and switches with Deoxit or similar cleaner?

tuner, phono, and line source all "weak"?

gsranch's avatar
gsranch OP
13 posts
 

Left channel output is very weak on all applications (phono - fm - aux).  All pots have been cleaned with deoxit and blown out with compressed air.  The right channel is strong and clear.  When the balance is turned to the left the left channel will produce weak sound about half way thru the volume knob.  I am at a loss since everything (caps - power amps ) have been replaced.  Thanks for your response and suggestions.

corelli
1,059 posts
 

Being a vintage receiver, I would wonder if a solder joint has gone bad on a circuit board somewhere beyond the phono amp/tuner board.

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