Philco 90

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Philco 90

fields 100
Member

Posts: 228
Threads: 64
Joined: Dec 2013
City: Northbrook, IL

10-28-2014, 09:03 PM

I tried to use the set after 2 months of it sitting on the shelf.There is a low hum present with the volume down and even 1st AF tube out. The radio has been 100% restored recently. Checked grounds, all seem to be OK.Middle tr-r tap for the 47 tube filament is grounded as well. E-caps do not show any leakage albeit checked with a regular VOM (still working on my cap. checker). Any other places should I check? Thanks.
P.S. I just read JPH 14 post from 10/05/2014. Does not look relevant to me, as the issue, I believe, is after 1st AF (27) tube. I did try another 47 tube with no improvement. Should I bump up the second E-cap?

http://www.nostalgiaair.org/PagesByModel...013881.pdf

(This post was last modified: 10-28-2014, 09:23 PM by fields 100.)

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Philco 90 - by fields 100 - 10-28-2014, 09:03 PM

RE: Philco 90 - by Phlogiston - 10-28-2014, 09:11 PM

RE: Philco 90 - by fields 100 - 10-28-2014, 09:24 PM

RE: Philco 90 - by morzh - 10-28-2014, 09:54 PM

RE: Philco 90 - by TV MAN - 10-29-2014, 01:53 PM

RE: Philco 90 - by morzh - 10-29-2014, 04:06 PM

RE: Philco 90 - by fields 100 - 10-29-2014, 04:34 PM

RE: Philco 90 - by morzh - 10-29-2014, 09:08 PM

RE: Philco 90 - by fields 100 - 10-29-2014, 09:29 PM

RE: Philco 90 - by morzh - 10-29-2014, 10:33 PM

RE: Philco 90 - by TV MAN - 11-02-2014, 07:01 PM

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