Thanks for your help Joe & John. (Yes, I unplugged the monitor for further
testing.) It turns out that one of the analog switches (1 of 4) in the
LF13201 that creates the feedback loop of the first section of A10 was bad.
I used the unused switch remaining in that part and VOILA! I got vectors!
I was following the upgrade instructions a little to blindly and really
needed to get out the scope and hunt.
FWIW: I think the R920 in the HV cage should be put on that list of
resistors to be upgraded to 1 Watt. Mine measured OK but had signs of high
heat (burn marks).
Jim
