Quote:
Originally Posted by ohohyodafarted
The high megohm high voltage resistors on either side of the convergence and focus pots on 15GP22 sets are of critical importance. These resistors are in a voltage divider arrangement and if the values of the resistors drifts too low, it will create excessive current draw through the resistance element of the focus or convergence pot. Excessive current draw through either one of these very high megohm pots will cause them to BURN UP, and these pots are pure unobtanium.
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My CT100 has those spiral IRC resistors. I measured them, as well as
the same kind of resistors in all my HV probes. ALL were still
within 1% of the rated value. I useed large numbers back in the 60's and 70s
for science stuff, and they never failed or drifted.
Obviously, too much voltage could overheat them, or
one could arc to the chassis ... and this could destroy them.