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

Zenith 6s321 transformer help
#1

Transformer readings:
primary 11 Ohms
secondary: 290Vac 488K Ohms
secondary 6.3Vac 1 Ohm

transformer looks a lil like it burnt
secondary 290 Vac seems high
#2

The xformer is shot, copper winding is neve in hundreds of kOhms. The only reason you are actually seeing some finite resistance is that you either hold it with your both hands, or you are measuring charred paper.
Either start rewinding or get a new one.
#3

http://www.flickr.com/photos/trog8/72297...hotostream

THX for your help
#4

What does it read from each leg of the high voltage winding to the center tap? The resistances should be close to equal, or voltages if you are applying power to the transformer. From what I know of the way brand Z did things the transformer was likely marginal to begin with, any overload would cause a smoke show even if the set was using a 5Y4 or an 80 instead of a 6X5. As Morz said the high voltage winding should measure in the 100s of Ohms not thousands, so the meter should be set on the 1000 Ohm range, if you don't get a reading then the winding is barbecued. If it's shot get a larger power transformer as a replacement if it will fit. Stupid brand Z sets!
Regards
Arran
#5

The voltages on yor dwg - are those measured ot you copied them from the sch? You can't possibly have 290V from a blown winding.
#6

i have not applied any voltage to the transformer. I'm checking my meters making sure they are ok.

I will check from the center tap to the windings. There was a wax like material all over the bottom of the transformer. About 3/16 thick.

I used the diagram with the tubes on it and a tube book to put the info on the schematics.
#7

well, if you measured indeed 488K, you can stop wasting your time and start looking for a new one.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
A little light Saturday positive about our hobby in our feed... My new every Saturday video about antique radio equipme...RadioSvit — 02:12 PM
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron. But I can't find those articles.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM
philco predicta
Hello, good afternoon, I would like to ask what the possible problem could be if I don't have an image on the screen. I ...cgl18 — 10:19 AM
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM

[-]
Who's Online
There are currently 917 online users. [Complete List]
» 1 Member(s) | 916 Guest(s)
Avatar

>