ctc12 clone beam current

[DaveWM]

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further looks at the schematic shows the same filament supply goes to other tubes with elevated cathodes, the CRT and the second IF tube.

thinking maybe a HK short, the CRT is not connected, so he pulled the 2nd IF still dropping the 180v to 90v.

.1 cap off shunt to ground, disconnected no help.

Timmy will trace all wires, disconnect one at a time until 180v is restored and the dropping point is isolated. I did see a couple dog bone caps on the IF strip, grounding that 2nd IF tube filament. So maybe disconnecting the IF H1/H2 (2nd IF heater)supply may be a easy place to start.


Realizing the CRT is at risk (of a HK short) , I think I will routinely check the DC potential of all my set, just in case of some drifting of that voltage divider.