Bad Transformer?

Register

Guest Join Us

Hello Guest,

Please feel free to join us!
There are many more parts of the Phorum that only members can see.

Thread Rating:

0 Vote(s) - 0 Average
1
2
3
4
5

Linear Mode

Bad Transformer?

gvel
Member

Posts: 78
Threads: 3
Joined: Mar 2011
City: Howell, MI

#5

10-29-2011, 10:28 AM

Without the 84 plugged in, you can check the AC voltage across each side of the secondary winding. First, measure at pin 2 of the 84 and the negative lead of part 61, the 12uF filter cap. Next, measure at pin 3 and the negative lead of part 61. The measurements should be similar, and I'm guessing around 300VAC.

If one or both sides are substantially less than 300VAC, your power transformer is toast.

-Greg

Find

« Next Oldest | Next Newest »

Messages In This Thread

Bad Transformer? - by Dark High - 10-28-2011, 09:19 AM

Re: Bad Transformer? - by Texasrocker - 10-28-2011, 03:15 PM

Re: Bad Transformer? - by Dark High - 10-28-2011, 08:00 PM

Re: Bad Transformer? - by Arran - 10-28-2011, 09:19 PM

Re: Bad Transformer? - by gvel - 10-29-2011, 10:28 AM

Re: Bad Transformer? - by Dark High - 11-14-2011, 09:32 PM

Re: Bad Transformer? - by 7estatdef - 11-15-2011, 12:30 AM

Re: Bad Transformer? - by morzh - 11-15-2011, 12:10 PM

Re: Bad Transformer? - by Chuck Schwark - 11-15-2011, 12:36 PM

Re: Bad Transformer? - by codefox1 - 11-15-2011, 02:28 PM

Re: Bad Transformer? - by Dark High - 11-15-2011, 03:45 PM

Re: Bad Transformer? - by Ron Ramirez - 11-15-2011, 05:13 PM

Re: Bad Transformer? - by Dark High - 11-16-2011, 05:56 PM

Re: Bad Transformer? - by 7estatdef - 11-16-2011, 07:05 PM

Re: Bad Transformer? - by james1095 - 11-17-2011, 02:43 AM

Re: Bad Transformer? - by Dark High - 11-17-2011, 09:17 PM

Re: Bad Transformer? - by 7estatdef - 11-17-2011, 11:44 PM

Re: Bad Transformer? - by Dark High - 11-18-2011, 10:33 AM

Re: Bad Transformer? - by Dark High - 11-18-2011, 04:04 PM

Re: Bad Transformer? - by morzh - 11-18-2011, 10:24 PM

Re: Bad Transformer? - by Dark High - 11-21-2011, 01:14 PM

Re: Bad Transformer? - by 7estatdef - 11-21-2011, 02:03 PM

Re: Bad Transformer? - by james1095 - 11-22-2011, 01:33 AM

Re: Bad Transformer? - by Dark High - 11-22-2011, 10:53 AM

Re: Bad Transformer? - by codefox1 - 11-22-2011, 04:47 PM

Re: Bad Transformer? - by 7estatdef - 11-23-2011, 12:28 AM

Re: Bad Transformer? - by Texasrocker - 11-23-2011, 10:41 PM

Re: Bad Transformer? - by james1095 - 11-25-2011, 03:20 AM

Re: Bad Transformer? - by Dark High - 11-28-2011, 01:00 PM

Re: Bad Transformer? - by Dark High - 11-28-2011, 01:01 PM

Re: Bad Transformer? - by Dark High - 11-28-2011, 04:19 PM

Re: Bad Transformer? - by morzh - 11-28-2011, 06:25 PM

Re: Bad Transformer? - by Dark High - 11-29-2011, 11:54 AM

Re: Bad Transformer? - by morzh - 11-29-2011, 05:52 PM

Re: Bad Transformer? - by TA Forbes - 11-29-2011, 08:27 PM

Re: Bad Transformer? - by 7estatdef - 11-29-2011, 09:28 PM

View a Printable Version

Users browsing this thread: 1 Guest(s)

Recent Posts
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
Hickok AC51 tube tester
Cleaned ann contacts, switches and sockets, works great now.martinj — 11:32 AM

Who's Online

There are currently 2726 online users. [Complete List]
» 2 Member(s) | 2724 Guest(s)