VU Meter - JLM

[Siegfried Meier]

Hey guys!

I have a pair of VU meters I made about a decade ago with the JLM VU meter buffer kits back then.  One of them seems to have dropped to about 1/3 the level of the other, and no matter what I do I can't increase the trimmer to match.  Can't seem to figure out what's happened with it, bad chip?  Bad cap?  Not sure what else to try at this point...they're relatively simple circuits, but complicated enough I suppose.

Any advice appreciated!
Thanks,
Sig

 

[ruffrecords]

Swap the cards on the two meters. if the fault goes with the card then the card is faulty. if it stays with the meter then the meter is faulty.

Cheers

Ian