"I pulled out the low voltage board this evening and found what I believe
to be a nonstandard modification to the circuit"
This was a input voltage limiting circuit that was added as a field
modification to the monitors. I beleive you will find an ascii version
of the circuit in Greg W's W-G repair FAQ.
I assume that you've checked that the exisiting LV regulator circuit
is still working, and the output isn't high?
