FOUND! ARVIN 9219-cm-uhf television.

[Yamamaya42]

https://i.imgur.com/B5mNfrL.jpg
one dead osc transformer.

edit--

thought as much, hopeless. not fixable. quite dead.

[Electronic M]

Originally Posted by Yamamaya42

https://i.imgur.com/B5mNfrL.jpg
one dead osc transformer.

edit--

thought as much, hopeless. not fixable. quite dead.

I'd carefully slice open the paper on the transformer and have a look. You have nothing to loose. Sometimes the magnet wire corrodes open close to where it solders to the colored leads or the outer layer of winding develops an open...

I had a vert Osc transformer in a Raytheon porthole where mice had chewed it up and I had to go down a layer to get back continuity in the open winding...It has ran decently on that lower turns count since then.

[Yamamaya42]

Originally Posted by Electronic M

I'd carefully slice open the paper on the transformer and have a look. You have nothing to loose. Sometimes the magnet wire corrodes open close to where it solders to the colored leads or the outer layer of winding develops an open...

I had a vert Osc transformer in a Raytheon porthole where mice had chewed it up and I had to go down a layer to get back continuity in the open winding...It has ran decently on that lower turns count since then.

i already tried that, no good.
VERY THIN WIRE though

How often do these damn ' block osc transformers' go bad? And what could have made it go, age? Or did some putz burn it up?
The Sams mentions shorting the plate of the osc tube to ground as a test, in a ref in one waveform, that put all the power that would be going to the tube to gnd via that transformer winding, that can't be very good for it...



EDIT====

just a coincidence?

https://i.imgur.com/EOFc6d2.jpg

:O