Philco Predicta 9L37 chassis horizontal output tube red plating.

[Dangler]

Thank's,Don. I'll try and check the cap later this afternoon. If not, it will be Wednesday before I can get back to it. I was thinking it was losing the -45 volts but wasn't sure. Sounds like a good place to start. It probably might not be a bad idea to replace the 12DQ6 while I'm at it. I'll have to dig out my Hickock and see if I have a decent used one. I think I have a few lying around in my tube boxes. If not, I can get a couple while I'm in Casper. Thank's again. Dan.

[Phil Nelson]

This article has restoration notes for the 9L37 chassis that may be helpful:

http://antiqueradio.org/philc12.htm

As others mentioned, it's pointless to expect much in the way of performance until you have replaced all of the paper (or plastic-coated paper) capacitors. The article also shows how I replaced a couplate, if you find that necessary.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[marty59]

I can't contribute much more to what needs to be done. However, when in the horizontal osc circuit, check both the horizontal hold and range pots and verify continuity. Wiring and connections as you may have noticed are not the best. Even though my couplates have been ok, I've had issues with bad pots.

I've had to replace/substitute the vertical linearity and contrast controls. Even though my set is in playing condition, I don't know when I'll ever consider it complete!