10-01-2012, 03:56 PM
Check for carbon tracks in/on tube sockets maybe.
Poor rivet ground(s) in the power circuit?
Possible partial winding short in transformer maybe?
Let's hope this is not the case.
Rememeber that the power transformer was rated at lower AC mains voltage. How's
it do on the variac at 110-115 VAC from cold start for an hour or so?
Any old end-wrapped dogbone resistors still in there?
S'bout it for the moment. Back to work...
Off Top of Head
Poor rivet ground(s) in the power circuit?
Possible partial winding short in transformer maybe?
Let's hope this is not the case.
Rememeber that the power transformer was rated at lower AC mains voltage. How's
it do on the variac at 110-115 VAC from cold start for an hour or so?
Any old end-wrapped dogbone resistors still in there?
S'bout it for the moment. Back to work...
Off Top of Head
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com