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Another Philco 38-690 question
Chuck Schwark
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Posts: 1,703
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#4

09-28-2010, 05:40 PM
Ah, then it sounds like there is heavy partial B+ short in there.

Try pulling one RF/IF/AF tube at a time also - maybe a partial internal tube short? A partially carbonized tube socket maybe? If the sockets are the thin two-layer wafer types, the leakage track can be between the wafers between pins. I've seen it. Also check the upper/lower chassis harnesses plugs/sockets for carbon tracks. B+ flows thru there too.

Everyone gets a 'tough dog' now and then.... Icon_smile

Chuck
Chuck Schwark,
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Messages In This Thread
Another Philco 38-690 question - by Ragazzo - 09-28-2010, 04:25 PM
Re: Another Philco 38-690 question - by Ragazzo - 09-28-2010, 05:05 PM
Re: Another Philco 38-690 question - by Chuck Schwark - 09-28-2010, 05:40 PM
Re: Another Philco 38-690 question - by Ragazzo - 09-29-2010, 04:26 AM
Re: Another Philco 38-690 question - by Ragazzo - 09-30-2010, 01:31 AM
Re: Another Philco 38-690 question - by Ragazzo - 10-03-2010, 04:54 PM
Re: Another Philco 38-690 question - by Ragazzo - 10-12-2010, 05:10 AM
Re: Another Philco 38-690 question - by Ragazzo - 10-20-2010, 05:21 AM



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