09-23-2009, 06:31 PM
Bill,
Thanks you for the reply. The power section of the radio appears OK now that I have
replaced the filter and buffer caps. B* at 250 volts solid until I connect to the tuner. Since I removed all
tubes, the partial short is somewhere in the passive elements. I suspect the IF because of the red X
marked on the can, probably by some past repair guy. I'm not sure how to check the IF transformer.
Guess I'll try a digital ohmmeter to see if the primary is shorted to the secondary. Thanks for
the Delco vs Philco tip. I assumed since the four 50 & 51 Stude radios I previously fixed were Philco, that
this one was also. I'll check around more this weekend regards the shield short possibility.
...Dick
Thanks you for the reply. The power section of the radio appears OK now that I have
replaced the filter and buffer caps. B* at 250 volts solid until I connect to the tuner. Since I removed all
tubes, the partial short is somewhere in the passive elements. I suspect the IF because of the red X
marked on the can, probably by some past repair guy. I'm not sure how to check the IF transformer.
Guess I'll try a digital ohmmeter to see if the primary is shorted to the secondary. Thanks for
the Delco vs Philco tip. I assumed since the four 50 & 51 Stude radios I previously fixed were Philco, that
this one was also. I'll check around more this weekend regards the shield short possibility.
...Dick
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