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

Philco model 87
#29

(01-22-2017, 03:48 PM)flatheadjr Wrote:  It does vary from 10k all the way open, and as you turn down the volume it goes to about 12 ohms at the bottom...

Ok this is good and you are measuring the resistance from the wiper to the chassis and not from the wiper to the other end of the pot? ? Or another way to measure it is with the coil wire disconnected measure the resistance from the chassis to each end of the pot. One side should be 10k and the other 0.

Quote:I hooked the wire back up and there is no response on the resistance on the volume control again.

This how it should be. The coil is a much lower resistance than the pot. To the meter it's just seeing the coil because it looks like a short by comparison to the pot.

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


Messages In This Thread
Philco model 87 - by flatheadjr - 09-28-2016, 09:27 PM
RE: Philco model 87 - by flatheadjr - 01-11-2017, 09:24 PM
RE: Philco model 87 - by flatheadjr - 01-21-2017, 04:40 PM
RE: Philco model 87 - by Radioroslyn - 01-21-2017, 07:44 PM
RE: Philco model 87 - by Mondial - 01-21-2017, 09:34 PM
RE: Philco model 87 - by flatheadjr - 01-21-2017, 09:52 PM
RE: Philco model 87 - by Radioroslyn - 01-22-2017, 12:07 AM
RE: Philco model 87 - by flatheadjr - 01-22-2017, 12:30 AM
RE: Philco model 87 - by Radioroslyn - 01-22-2017, 07:10 AM
RE: Philco model 87 - by flatheadjr - 01-22-2017, 02:16 PM
RE: Philco model 87 - by Radioroslyn - 01-22-2017, 03:11 PM
RE: Philco model 87 - by flatheadjr - 01-22-2017, 03:48 PM
RE: Philco model 87 - by Radioroslyn - 01-23-2017, 01:25 AM
RE: Philco model 87 - by flatheadjr - 01-23-2017, 01:37 AM
RE: Philco model 87 - by Radioroslyn - 01-23-2017, 01:11 PM
RE: Philco model 77 - by Radioroslyn - 09-29-2016, 10:29 AM
RE: Philco model 77 - by flatheadjr - 09-29-2016, 12:17 PM
RE: Philco model 77 - by Arran - 10-01-2016, 05:00 AM
RE: Philco model 77 - by flatheadjr - 10-08-2016, 06:22 PM
RE: Philco model 77 - by Radioroslyn - 10-08-2016, 08:05 PM
RE: Philco model 77 - by flatheadjr - 10-12-2016, 09:31 PM
RE: Philco model 77 - by Radioroslyn - 10-12-2016, 10:35 PM
RE: Philco model 77 - by Radioroslyn - 10-17-2016, 08:05 PM
RE: Philco model 77 - by flatheadjr - 01-04-2017, 11:08 PM
RE: Philco model 77 - by Radioroslyn - 01-05-2017, 10:30 AM
RE: Philco model 77 - by flatheadjr - 01-05-2017, 09:46 PM
RE: Philco model 77 - by Arran - 01-09-2017, 04:02 AM
RE: Philco model 77 - by Radioroslyn - 01-09-2017, 11:42 AM
RE: Philco model 77 - by flatheadjr - 01-11-2017, 12:03 AM
RE: Philco model 77 - by Ron Ramirez - 01-11-2017, 01:20 PM
RE: Philco model 77 - by Radioroslyn - 01-11-2017, 09:03 AM



Users browsing this thread: 4 Guest(s)
[-]
Recent Posts
Philco 91 Restore Code ??
Can someone tell me if my 42 tubes are connected triode or pentode in fixed or cathode bias? How could I tell by looking...dconant — 10:47 AM
Philco 40-120C Restoration
Hello David, that is great news about the tubes source being local ! Sounds like you got good start on the radio . ...radiorich — 09:41 AM
An attempt to remove the Field Coil from a G speaker
Mike; I've only run into a speaker with an open filed coil twice, and they were on newer speakers from the 1940s. One ...Arran — 12:48 AM
An attempt to remove the Field Coil from a G speaker
Arran Yes, this is my plan for now and what do I got to lose, this is not even the speaker from this radio, but one o...morzh — 10:44 PM
An attempt to remove the Field Coil from a G speaker
Mike;  I would unwrap the field coil, and see if maybe there a break near one of the ends, like where the coil wire att...Arran — 10:23 PM
An attempt to remove the Field Coil from a G speaker
...and this is what I did. I fed a little LT into the screwholes with a small brush, and a little on the rim next to the...morzh — 09:52 PM
Philco 40-120C Restoration
I combined the two 40-120C threads together as we like to keep the discussion of the same radio together. It helps with...klondike98 — 09:36 PM
Philco 40-120C Weak, Distorted Ouput
Just checked were I buy tubes price is four dollars. So living in Florid we have a local source for tubes. David    David — 09:14 PM
Philco 40-120C Weak, Distorted Ouput
The higher voltage may be due to higher mains voltage. My mains run 120-125AC when the set was new mains would be 110-11...David — 09:09 PM
Philco 40-120C Weak, Distorted Ouput
Thank you for your reply. I pulled a speaker from a Philco 41-221 and received the same result. I used a signal tracer t...bluecap — 08:45 PM

[-]
Who's Online
There are currently 4434 online users. [Complete List]
» 1 Member(s) | 4433 Guest(s)
Avatar

>