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

Thread Closed
Thread Rating:
  • 2 Vote(s) - 2.5 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco 40-140 Field Coil Replacement
#19

Guys, thank you for all of your assistance on this. For some reason, I wasn't getting an email when someone posted something on the thread. Is that how it works, or should I just check back? Well, anyway, sorry for the delay. I have continued to work on the set, and it's turning out good. The low volume was in the potentiometer. Using a little electric cleaner spray, I got it back. It still had a hum and slight growl. This one stumped me for a few weeks, but here is the deal: I was in the process of hooking my signal tracer up to it. I first grounded the radio to the tracer. When I did this, the hum and growl went away. I knew I had some kind of grounding problem. Now, this radio has a special loop aerial - it has five screw-type aerial posts on the chassis. I had removed this and was just using my test aerial, which is a long cord which stretches the length of the garage. I hooked that to the first post. The other screw posts I left blank. After I found out it was a grounding problem. I tooke the Philco aerial off the shelf and put it back properly and it now sounds fine. The other sets I have worked on only had an aerial and a ground post, so I didn't see the problem. Suffice it to say it is sounding great. Thanks so much to all who pitched in with advice.


Messages In This Thread
Philco 40-140 Field Coil Replacement - by radiola - 09-05-2012, 12:21 AM
RE: Philco 40-140 Field Coil Replacement - by radiola - 10-02-2012, 10:18 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
1949 Motorola 5A9M
Hello All; I found the CMB41L down in the basement, it is definitely a 1950-51 model, the capacitors have date codes ...Arran — 07:48 PM
Philco 42-345 Restoration/Repair
Hi, all the caps I order, other than the electrolytics, are of the 630V rating. No worries on it being too high, and no ...gary rabbitt — 05:46 PM
Philco 42-345 Restoration/Repair
Hi, there's a lot to consider when designing these circuits so you shouldn't have a lot of concern when replacing caps. ...RodB — 02:03 PM
Philco 42-345 Restoration/Repair
I have ordered and received new caps for this radio and hope I've ordered the correct ones. I tried matching them to the...osanders0311 — 11:35 AM
Philco newbie with P-1891-WA console questions
Hello Jeff , Far as the Electrolytic capacitors go here is a list of parts. that will work . I like using Nichicon and...radiorich — 09:50 PM
Philco newbie with P-1891-WA console questions
Well, I've been stumped at trying to get the first of 11 electrolytic capacitors. I got a schematic and have a list of t...Jeffcon — 07:54 PM
Model 80 Antenna Issue?
Thanks Gary and Rod.  I also found an article in the Philco Repair Bench under Service Hints and Tips, about installi...Hamilton — 12:32 PM
Model 80 Antenna Issue?
Hello Hamilton, here is a little information found in our Philco Radio Library at the bottom of the Home page. Hope it ...GarySP — 11:28 AM
Model 80 Antenna Issue?
I did as you suggested and touching the middle of the volume control did nothing so the coil has to be rewound. Any idea...Hamilton — 10:19 AM
1949 Motorola 5A9M
This would be the second portable in the "other radios" forum where I have a similar one in my collection. I h...Arran — 12:41 AM

[-]
Who's Online
There are currently 1267 online users. [Complete List]
» 3 Member(s) | 1264 Guest(s)
AvatarAvatarAvatar

>