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: 2 Guest(s)
[-]
Recent Posts
6TPZ and 5TPO Radio Help
If you are still on 5TPO, you lost me there. What X7? What Points 1 and 2?morzh — 08:37 PM
6TPZ and 5TPO Radio Help
Quick progress report: X7 is broken. Only one leg soldered, the other missing and the diode is cracked. I've replaced...R3Sons — 05:05 PM
6TPZ and 5TPO Radio Help
Oh...and you have electrolytic caps there. All need to go and be replaced.morzh — 04:36 PM
6TPZ and 5TPO Radio Help
Thanks, will do.R3Sons — 01:25 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM
Philco 91 Schematic
Hi Rod, The resistor connects to pin 4 and the ungrounded side of block 9. From pin 9 of the RF tube to one side of ...dconant — 09:34 AM
Just got a 49-1613 need to know...everything!
I just found your post. I have this exact same model, and have had it since 1985 when I was 15 years old! I performed a ...MuzzcoVW — 09:11 AM
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM
RCA 15X
I'd try replacing the bulb first and if that doesn't do it, then change the 35Z5 and see if the problem goes away.NostalgiaRadioTime — 12:28 AM

[-]
Who's Online
There are currently 4749 online users. [Complete List]
» 3 Member(s) | 4746 Guest(s)
AvatarAvatarAvatar

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