Philco 38-690 electrolytic capacitors--UPDATE - Printable Version

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RE: Philco 38-690 electrolytic capacitors--UPDATE - Diverted - 03-15-2015

[quote pid='60118' dateline='1392944190']
Most of those caps are rated at 475V. My 38-690 has all the original caps and I don't recall any marked 450. A few are marked 500; I will go into the basement later and get the specs for each.
[/quote]

(02-20-2014, 08:56 PM)retiredinprescott Wrote:  I recently obtained a 38-690.  Something must have happened during shipment (it was well packed) because the set is now "non playing" with only a low hum coming from the main speaker.  Set was playing before it was shipped I was told.

I'm starting with the power supply and will rebuild that and check it with audio input.

A number of electrolytic caps have been replaced at some point with large 600V units (not checked yet).   I have the original Philco parts numbers for the caps that should be there  but I can't find a cross reference to the working voltage of the original caps.   Would they have been higher than 450V??   Parts numbers are as follows:
30-2200 (18uF)
30-2025  (three of these 8uF)
30-2249 (multi section)
30-2201 (8uF, 10 uF)

The Philco parts list and schematic shows the capacitance values but no voltage values.
This is going to be a long slog.  The power supply doesn't look too bad but that chassis is really intimidating..

Thanks,   Mark

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RE: Philco 38-690 electrolytic capacitors--UPDATE - Diverted - 03-15-2015

Here are the part numbers, uf value and voltage ratings for the electrolytics on my 38-690 (Code 125).

Part 110: 2uf 450v; 2uf 450v, 1uf 450v, 10uf 50v, 2uf 300v.
Part 164: 3uf 475v; 2uf 300v; 8uf 475v.
Part 169: 8uf 475v; 10uf 50v
Part 170: 8uf 475v
Part 173: 18uf 500v
Part 176: 8uf 475v
Part 177: 8uf 500v

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