AU-717 No Bass Boost with Tone On in Left Channel

Figures, I just redid that assembly and could have scoped it for you. My bet is on a broken interconnect ribbon cable. Need to verify continuity from trace to trace through the cable, they can break off at the very end and not be readily visible as a fault. The big G's and early xoxo series are famouse for this.
 
I just tested the green poly caps and found one that tests low....then reads OL after about 30 seconds on the meter. So I swapped the L cap for the R side and the problem moved channels....So at this point it appears I have one bad 0.0015uf cap...on F-2665.
 
Last edited:
I have never had one of these go bad on me… Do you have any recommendations on the brand or series of capacitor to replace this with? For example from mouser? Thanks
 
Kemet PHE426 (polypropylene type): mouser.com/ProductDetail/KEMET/PHE426DJ4150JR05/?qs=sGAEpiMZZMv1cc3ydrPrF85GIl804cbN1I8GIIwT6ow%3d
 
One more question: if I were to want to stock some of the most common sizes of these caps, what values would I buy?
 
Back
Top Bottom