07-29-2020, 12:21 AM
More investigations over the weekend. The symptoms look like a passband shift. However, I got sidelined trying to complete an alignment. My cheap frequency counter module is not that reliable on some of the PLL circuits, so I have ordered a better instrument from the selections available on Ebay. It is something I wanted anyway, and should make life easier. After that, it will be back to diagnosing the IF
I don't hold with furniture that talks.