JYE Tech Forum

My DOS worked fine for a month, then it failed.I checked it with a meter and found a short in the reference voltage point 3.3v and U1 pin 1. This is duzz because the problem is somewhere in the trace line. I have removed components and the failure is still there. I would like to view a copy of the trace photo to determine the faultin the DOS.

I just got the traces, and man are they pretty. I can trace more. If you think the schematics are something, wait till you view the trace circuit.

This one is a hard one to find.