1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco 90
fields 100
Member
***
Posts: 228
Threads: 64
Joined: Dec 2013
City: Northbrook, IL
#1

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.)
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
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



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Restoration of the Canadian General Electric A-87
Ok.... In the fourth year of the war, I still decided to return to an active hobby. For more than three years, I did not...RadioSvit — 10:43 AM
Philco 37-116 Cabinet Repair
You'll probably have to get quite a large amount of wax filler, those are some big gaps, and both sides. Nice summer pr...RodB — 10:38 AM
Philco 37-116 Cabinet Repair
Hello everyone. I completely agree with Richard and Dan - in this case, without replacing the veneer, only a wax filler ...RadioSvit — 10:07 AM
Philco 37-116 Cabinet Repair
I have used Timber Mate Timber mate is a grain filler  . You can get it in different colors,so it will be close to...Dan Walker — 09:51 AM
Help with Supreme 599
The 300 ohm line adjustment is used to set the primary of the transformer to a nominal voltage for any line voltage from...DaleHCook — 09:22 AM
Philco 37-116 Cabinet Repair
I think Arran is correct about the substrate expansion. I'm going to give the colored wax a try.dconant — 08:11 AM
Philco 37-116 Cabinet Repair
Hello Guys, What I would do is get  colors of wax filler and fill in the void ! Sincerely Richardradiorich — 12:41 AM
Philco 37-116 Cabinet Repair
It looks to me like the structure under the veneer may have expanded from humidity cracking the veneer on the surface. W...Arran — 09:42 PM
Help with Supreme 599
Iam only getting 4vac out of the tranny For the 80 filament. The line rheostat Looks fine and the tranny is getting 11...daveone23 — 08:45 PM
Rogers Majestic R-646
Transformers rewind? It's very easy! If you don't have round eyes  8-) Vlad95 — 01:55 PM

[-]
Who's Online
There are currently 1006 online users. [Complete List]
» 1 Member(s) | 1005 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration