The circuit changes in the +28 volt area were undone, not physically easy, as big
wires were twisted on tightly. The 6x5s (except heaters) were removed from the circuit
and replaced with 1800V PIV silicon diodes, these being specifically specified
for damper and CRT supply use.
The +28 and minus 50 circuits were checked out using the 28v supply and
appear to work OK.
Next is build the power supply.
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