|8th March 2012, 08:36 PM||#21|
Join Date: Sep 2005
It's unlikely to be one of the LM339's if the left channel display is working - best bet is to compare your healthy left signal channel input network with the right. The .47uF zit red tantalums would be the first caps to go - ... once you take the face-plate off
Last edited by Malotron; 8th March 2012 at 08:39 PM.
|9th March 2012, 04:14 PM||#22|
The one and only
Check the voltage across those A42's. They are being used as zener
references, and might not be developing the voltage you want.
Nevermind, that would affect both channels.
One of the 339's on that side might be bad, injecting current into
the node the - inputs of each 339 have in common. Try shorting that
node to ground.
Last edited by Nelson Pass; 9th March 2012 at 04:17 PM.
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