I fixed both monitors. It was a bad solder joint. Was making big plans
to go buy parts, and got fed up and just started poking around
intuitively with my finger on the back of the circuit board. I touched
the jumper that goes between pins 8 & 9 on the TDA1180P and instantly
it syncs up. A few minutes with the soldering iron and both units are
working. Sometimes it *is* simple.