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

Bad Transformer?
#15

I've wound and re-wound power transformers, it takes patience but if the core is not welded it isn't too difficult, but for something as high voltage as a tube radio that's a LOT of turns. You may have got lucky and just boiled off some of the wax, but I would keep a close eye on the transformer and not run it unattended for a while. Add a fuse to the primary too!

Did you test the tube to see if it was shorted? The continuity function on your multimeter will do that for you. It's entirely possible that the rectifier is just fine, but that something else is shorted. There are several wax paper decoupling capacitors in addition to the two electrolytic capacitors between B+ and ground, any one of these shorted can burn up your transformer.


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



Users browsing this thread:
[-]
Recent Posts
The list of my radio & TV collection!
Yes, Michael. But strangely enough, I managed to keep the original veneer. I must admit that I don't really like it, so ...RadioSvit — 02:21 PM
The list of my radio & TV collection!
Good radio. I bet there was a lot of veneer fixing.morzh — 02:16 PM
Philco 46-480 Electronic Restoration
>> it is because I am retired and a little demented. You have just the right amount of it. No perfectly sane p...morzh — 02:14 PM
The list of my radio & TV collection!
Old Zenith 5S-29 tube radio. First turn-on after repair and reception quality testing. Demonstration of the operation of...RadioSvit — 01:27 PM
Philco 42-345 Restoration/Repair
Welcome to the Phorum, osanders0311!  Regardless how far you intend to restore this set, first priority should be replac...GarySP — 11:51 AM
Philco 46-480 Electronic Restoration
Joseph, it is because I am retired and a little demented. My problem is that I wanted to own a collection that spans th...MrFixr55 — 11:29 AM
Philco 46-480 Electronic Restoration
Wow, here I am with only two restored radios. I’ve got to boost those numbers! If you can’t run with the big dogs, you m...jrblasde — 10:04 AM
Philco 46-480 Electronic Restoration
Hello MrFixr55, That will for sure keep you out of trouble! Last Sunday was spent mostly doing yard work anyway the we...radiorich — 09:50 AM
Philco 46-480 Electronic Restoration
Throw in all the Audio equipment that has to be kept in a bedroom (my office)L. 8 portable self contained PA speakers, ...MrFixr55 — 07:40 AM
Philco 42-345 Restoration/Repair
Looking at the pic supplied by Rod B, you can duplicate the missing loop antenna. 10 gauge copper wire can be used to m...MrFixr55 — 01:20 AM

[-]
Who's Online
There are currently 1250 online users. [Complete List]
» 2 Member(s) | 1248 Guest(s)
AvatarAvatar

>