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

Philco 87
#1

Upon further troubleshooting I found 1/2 of the output transformer open and the 2nd AF input transformer is melted open.
Does anyone have any suggetions?
Thanks
#2

Jimony, don't dispair, I had a lot of trouble with my first one, as a matter of fact it is still not up and running. The transformer will have to be replaced if possible. If a replacement can't be found you may be able to get it re-wound. The AF coil I am not familiar with but will take a look at the schematic and see if I can come up with an idea. Do you mean the first IF transformer? These alternative may get expensive so you will have to make a discision as to how to play it.
#3

Thanks for the reply. There is an input transformer fronm the 1st audio tube to the grids of the 45 tubes, It melted.
The output transformer from the plates of the 45's to the speaker has 1 side open. I read that the 45 is equivilent to the 2A3 tube. Looking in a catalog from TUBESANDMORE.com they have a 2A3 output transformer. I will email them for an exact description.

Thanks!
Jim
#4

Jimony, just so I know what we are talking about, the xfmer is part #25 2nd AF xfmer right? From the schematic that looks like an iron core xfmer, but since you are saying it "melted down", I'm assuming its tubular cardboard with coils wire wrapped around it, is that so? Pat
#5

The parts list shows p/n 3242 for the #25 push-pull input transformer and p/n 2848 for the #36 push-pull output transformer.
Chuck's site has info on the 3242 transformer:
http://www.philcorepairbench.com/audioinp.htm

Carl
Northern Panhandle, WV




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM
Philco 46-420 Code 121 Reception issues
Welcome Eric, I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM
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

[-]
Who's Online
There are currently 4629 online users. [Complete List]
» 3 Member(s) | 4626 Guest(s)
AvatarAvatarAvatar

>