04-12-2012, 06:12 PM
I finished replacing all the paper caps and electrolytics. It's got a weird problem and for now I'm going to shelve it and tinker with something a bit easier before I dig back into this over-crowded mining pit. Here's the story:
All paper caps replaced.
All electrolytics replaced.
All tubes tested, weak replaced.
All contacts everywhere cleaned.
Tuning condensor cleaned and lubed.
Replaced burned out bulbs.
What I have not done:
Replaced any resistors.
Touched any bakelite blocks.
Symptoms (using a variac):
90 volts - she plays and draws a little less than 1 amp.
105 volts - same but draws 2 amps.
122 volts (max) - same but now draws 3 amps.
What the heck is going on? I'm at a loss to understand why going from 90 to 122 volts triples the amperage draw. As I said, it's going to set a bit, but any insight would be appreciated.
Larry
All paper caps replaced.
All electrolytics replaced.
All tubes tested, weak replaced.
All contacts everywhere cleaned.
Tuning condensor cleaned and lubed.
Replaced burned out bulbs.
What I have not done:
Replaced any resistors.
Touched any bakelite blocks.
Symptoms (using a variac):
90 volts - she plays and draws a little less than 1 amp.
105 volts - same but draws 2 amps.
122 volts (max) - same but now draws 3 amps.
What the heck is going on? I'm at a loss to understand why going from 90 to 122 volts triples the amperage draw. As I said, it's going to set a bit, but any insight would be appreciated.
Larry
