Zentih FM AM wood cabinet 730 series, preformance prob.

amfmdon

New Member
Zentih FM AM wood cabinet 730 series,
I have just bought 5 of these they seem to have the same problems - these are the 7 tube models from 59 to 67 era - the sound is really good - but the volume sometimes will have a mind of its own - sudden blares.. and drop outs
any ideas???
these are the 731 chassis & 730

thanks
Don
 
I just tested the whole set of tubes in my Zentih 731 the tube that reads 12DT8 tested way bad.. that may be why the volume jumps up and down?

cheers
Don
 
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