b wrote:
...just a black screen - no audio or image. channel numbers change
thats all. Playback is Ok, it seems just the e-e signal has got lost.
measuring the tuner pins I have the following:

bu - 15v (=uhf band selected)
bt - 15v
afc - 6v
bm -15v

I forgot to mention, the unit 'goes thru the motions' of searching for
channels. As it does so, the voltage on the the BT pin does in fact
vary from about 0-33 volts as I suspect it should....At this point I am
looking at changing the tuner.