Post 18 has 750 VAC on the rectifier anodes. Now you have 338 VAC per anode. That is a very significant voltage loss. Did you ever substitute the rectifier? You need to do that and report back.
Your 5 VAC appears to be unchanged from its original 5.2 VAC. But your former 6.5 VAC now seems low at 2.95 VAC to ground. Measure the voltage directly at pins 2 and 7 of the first 6L6 and report back.
Your bias voltage has dropped as well.
What is that current reading across the Standby switch? You have 00.8 A. That is off by ~ a factor of 10 for a nominal current draw. Did you mean 0.08 A? Verify that and report back.
The "before and after standby" voltage checks are often useful in determining if a PT has become lossy or has shorted turns.
If the current draw is indeed 0.08 A (80 mA) at the Standby switch, that rules out any excessive current draw in the circuitry after the Standby switch. Then you have to suspect the PT or rectifier and their associated wiring.
Your 5 VAC appears to be unchanged from its original 5.2 VAC. But your former 6.5 VAC now seems low at 2.95 VAC to ground. Measure the voltage directly at pins 2 and 7 of the first 6L6 and report back.
Your bias voltage has dropped as well.
What is that current reading across the Standby switch? You have 00.8 A. That is off by ~ a factor of 10 for a nominal current draw. Did you mean 0.08 A? Verify that and report back.
The "before and after standby" voltage checks are often useful in determining if a PT has become lossy or has shorted turns.
If the current draw is indeed 0.08 A (80 mA) at the Standby switch, that rules out any excessive current draw in the circuitry after the Standby switch. Then you have to suspect the PT or rectifier and their associated wiring.
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