1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Home Radios
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
Philco 90 RF coil pinout IDs
Bill068
New Member
*
Posts: 2
Threads: 1
Joined: Oct 2011
#1

01-30-2012, 05:14 PM
Hi,

Here's a photo of my problem in troubleshooting a Philco 90:

[Image: http://i1160.photobucket.com/albums/q498...rtA1-1.jpg]

The Rider's sheet mentions cryptic abbreviations for coil pins (I believe) but I haven't decoded them. Can anyone help? The 90 I have is apparently the latest model chassis and works with 24As in the front end but not with 35s. Also, the RF section is not working so I'm assuming it's in the Antenna input coil. It looks good (no apparent corrosion, and I haven't removed it) but all resistance readings are infinity.
Find
Radioroslyn
Phorum Expert
*****
Posts: 7,288
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#2

01-30-2012, 06:32 PM
Sounds like it's time to rewind!!! Am getting PB home page.

Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
Find
Bill068
New Member
*
Posts: 2
Threads: 1
Joined: Oct 2011
#3

01-30-2012, 06:51 PM
Thanks for the reply and note that the photo didn't show. Here's an address that I just tested and it seems to work. Some of the examples of the nomenclature giving me a fit are within the circled area.

[Image: http://i1160.photobucket.com/albums/q498...hartA1.jpg]

(The web address is contiguous without the separation caused by the question mark on line 1.)
Find
« Next Oldest | Next Newest »




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
Well, a wave trap is a trimmer in series with the coil so at the resonant frequency it provides a short to ground. This ...RodB — 10:07 AM
Philco 60 Squealing
Rod, My radio is run 7. The wave trap is on that schematic as shown in the picture. dconant — 09:21 AM
American Bosch Model 802 auto radio
Hi Arran ,  Thanks for your help with this radio.And especial thanks for letting me know to look it up under United Ame...Antipodal — 04:32 AM
Philco 60 Squealing
Usually a wave trap is for keeping IF signals from entering the antenna and from leaving the antenna. You feed an IF sig...RodB — 09:30 PM
Philco 60 Squealing
I just peaked it for the best signal at 600. NULL it for IF frequency, originally it would have been null for 500kh...Chas — 08:05 PM
Philco 60 Squealing
Wavetrap no longer matters.morzh — 05:19 PM
Philco 60 Squealing
Rod, I had checked out your suggestions but did not help. I did solder the ground rivets to the chassis as Chas suggeste...dconant — 04:52 PM
37-690 Bass Choke Replacement
Yeah, I know, Mouser and Digikey don't have "big iron" components. For some reason Philco was messing with the...Radiodial — 04:25 PM
37-690 Bass Choke Replacement
Yes, I just had to deal with that while repairing the 37-604 Philco. Exactly that value choke was gone. And the current ...morzh — 03:52 PM
37-690 Bass Choke Replacement
Ah, now where to find one. I've into this before on smaller sets, I now recall. Hammond makes one that is only rated...Radiodial — 03:27 PM

[-]
Who's Online
There are currently 2322 online users. [Complete List]
» 2 Member(s) | 2320 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Home Radios