Hello Harry-
I was able to do some fault finding by switching to CW, straight key. That mode gives a chance to measure levels and trace through the board if necessary. A dry joint on anything up to and including the output of the QSE could be at fault. Look for the similarity between I and Q all the way to the output mixer ¡®3253.?
Since V10/11 boards create CW as well as SSB through the ?audio adapter, this is a valid technique. I found a poor solder connection was at fault for my case.?
Larry
KB3CUF
