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Philco 38-7 Electrolytics replacement
#26

Parts came in and I have all the capacitors replaced, plus a few resistors that were out of spec. Bad 6J5G tube replaced as well. The only resistor I did not check was the multi-section one. I will have to get back to that one before I put the chassis back in the cabinet.

Meanwhile, I did slowly apply voltage with the variac and brought the radio up and have it playing. Sounds okay, but I have a bit of noise on the lower end of the tuning dial. Not able to clearly bring in the station at 580 on the dial. 670 comes in loud & fairly clear, but 580 has a lot of loudish white noise and is very faint.

It also had a squeal for a little while, but once I re-cleaned and tightened up the socket on the 6K7 the squeal disappeared. I found the source of the squeal by poking around the inside of the chassis with a dry popsicle stick and noticed when I jiggled one of the socket pins that the squeal stopped.

Next I'll check the multi-resistor and make sure that's going to be in spec. The only question I have right now is: What can I do to get rid of the hashy white noise at the lower end of the dial? It's fairly quiet above 900 on the dial.

Larry D.


Messages In This Thread
Philco 38-7 Electrolytics replacement - by LarryD - 06-13-2026, 11:13 AM
RE: Philco 38-7 Electrolytics replacement - by LarryD - 06-24-2026, 03:56 PM



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