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Reese,
I let the unit warm a little before I tested this morning.
With the top cap off again, I found the loud hum to be constant and not die off like before. So with the top cap off, the hum is loud and constant.
With the top cap clip on there is hum and the pitch changes if I touch the top cap with my finger.
As I turn the volume knob, the hum becomes apparent at about half way and increases as you move to full volume. The increase in volume seems pretty smooth, without alot of pops or crackle.
No radio broadcasts can be found, only hum at a constant level...no scratchyness.
The pitch goes from low to high as I move from one end of the dial to the other.
25L6 - A. 89.5V / B. 88.3V
6Q7 - 89.5V
6K7 - Front 90.7V / Rear 90.7V
6A8 - 89.9V
Thanks
martin
Last edited by marloubow; 11-06-2011 at 12:34 PM.
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