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

Philco 39-40
#7

Thanks for all the responses! I guess what I thought would be a simple 'few new capacitors and hope it works' is really going to be a bit more... involved.

Ron, you mention that there is still a risk even if I disassemble the transformer covers and replace the rubber coating... would that be if the wiring underneath the paper has already shorted? And amateur question; to check for shorts, am I basically just checking to make sure there is no continuity between windings, and checking the ohms for each winding to make sure they're close to the schematic?

I guess regardless, I should probably check each winding first to make sure I'm not dealing with a bad transformer before I do all this work.

David, thanks for the link to the schematic. It seems very well labeled, and I notice the transformer colors are labeled as well- that will make it easier. Perhaps an uninformed question: each winding has two wires, one for each end, eg. 2 whites for the primary... is there a difference between either of them? Hypothetically, if I connected the one which is on the other side of the power switch, and switched it with the one connected to the other side of the line... would that matter?

I could not see anything moving around inside that 42 tube, so it might be ok. I did manage to break off one of the tube caps while cleaning the others... oops. I think I can re-solder that, maybe.

In the meantime I've been trying to polish the metal dial surround- it's better, not perfect. Just been using metal polish. What I find very cool is that the presets have stickers on them for local stations, eg. WICC, WOR, etc, many of which are still around.


Messages In This Thread
Philco 39-40 - by adamrobertg - 04-09-2017, 10:32 AM
RE: Philco 39-40 - by simplex1040 - 04-09-2017, 11:19 AM
RE: Philco 39-40 - by klondike98 - 04-09-2017, 12:12 PM
RE: Philco 39-40 - by David - 04-09-2017, 06:39 PM
RE: Philco 39-40 - by Ron Ramirez - 04-09-2017, 06:57 PM
RE: Philco 39-40 - by Mondial - 04-09-2017, 07:14 PM
RE: Philco 39-40 - by adamrobertg - 04-09-2017, 11:50 PM
RE: Philco 39-40 - by simplex1040 - 04-11-2017, 08:10 PM
RE: Philco 39-40 - by adamrobertg - 04-26-2017, 10:02 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco 46-420 Code 121 Reception issues
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM
Philco 42-1008 conversion kit
Interesting. I haven't seen that before.klondike98 — 07:02 PM
12' Philco
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM
Shadow Meter Bulb
Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM
Shadow Meter Bulb
Ok. Thanks for the correction.RossH — 03:09 PM
Model 28L
For 28 you will probably need to buy a Hammond 125CSE. Or any of the series of the power you need, with SE suffix. Then ...morzh — 02:09 PM
37-60 revision 6
I am restoring a Philco 37-60 and it shows run 6 they removed the ground from G3 of the 6K7G and put the G3 to -2.5v for...bobbyd1200 — 01:01 PM
Shadow Meter Bulb
Mike is correct on the bulb connection, two separate circuits. I found that by rotating the bulb and sliding it forward ...RodB — 12:19 PM
Hickok AC51 tube tester
Cleaned ann contacts, switches and sockets, works great now.martinj — 11:32 AM
Model 28L
Hello, I'm restoring a Philco 28L and the output transformer is open. Part number of the transformer is 32-7020. Can...HORSTE — 10:32 AM

[-]
Who's Online
There are currently 6410 online users. [Complete List]
» 1 Member(s) | 6409 Guest(s)
Avatar

>