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
Samlex heavy-Duty bench supply filter question
I suggest sticking with the original values. Depending upon the design if you increase the cap values too much the incre...DaleHCook — 08:55 AM
AC/DC Transformer-less Sets
You’re welcome! I was born in 1995, so this is all second-hand information to me from the industry. I did some research ...jrblasde — 08:38 AM
Samlex heavy-Duty bench supply filter question
Hello Everyone, I have one of my Heavy-duty bench powersuplies made by Samlex it's 13.8 volt dc 20-25 amp supply. What I...radiorich — 11:24 PM
Looking for place to donate unique Philco Philco J-1930 Prototype
It's a Glaser Sears changer which Philco's engineers thought was an upgrade over a VM, but in retrospect I'd prefer the ...jeibner — 10:39 PM
AC/DC Transformer-less Sets
Joseph, Thank you for the confirmation. I knew that there must be more to the Transformer-less AC/DC radios than the ...PeterN — 10:30 PM
AC/DC Transformer-less Sets
Good evening, folks. Power station engineer here! The east coast had pockets of DC-only power well into the twentieth...jrblasde — 10:11 PM
AC/DC Transformer-less Sets
Model 40 does not have a rectifier, so it would be a DC only model. This however does not say anything about using...morzh — 08:01 PM
AC/DC Transformer-less Sets
I was wondering if anyone knows if these AC/DC transformer-less sets were actually used on 110v DC anywhere, and when. ...PeterN — 06:35 PM
Looking for place to donate unique Philco Philco J-1930 Prototype
Given the 1960s vintage, it is likely that the cartridge is ceramic, likely more stable. The changer looks like a Voice...MrFixr55 — 05:03 PM
Jackson 665 j2 schematic request
FIXED!daveone23 — 03:55 PM

[-]
Who's Online
There are currently 5171 online users. [Complete List]
» 1 Member(s) | 5170 Guest(s)
Avatar

>