Still digging into the vertical issue. Removed the chassis, triple checked all capacitors, re-did all the solder points to be safe.
Swapped out both Vert OSC (
6BF6) and Vert Output (
6DT5) with some good NOS tubes.
Replaced
R50 with a new resistor.
Still got vertical collapse. - I guess I could work backwards from
6DT5?
Set the line voltage to 117v AC.
When checking
6DT5 I got the following voltages:
- Pin# 1 280.1v (spec is 275)
- Pin# 7 20.52v (spec is 20v)
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tube by
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