K7000 Flyback Transformers

[Liam]

Does anyone know where these can be bought now?

 

[Chopper79]

https://www.donberg.co.uk/descript/h/hr_7717.htm

 

[Liam]

Thanks very much.

On the subject of K7000, I've been having trouble with a 19K7601. I suspected IC2, but having tried a different chassis on the same tube, I'm getting exactly the same result, as seen in the photo. V and H Hold are having an effect, and I can de-sync both, but the screen remains like this, completely garbled. It appears to be a tube problem. What are the odds of both chassis having exactly the same trouble? The chassis I swapped in was known to work before.

 

[Chopper79]

Looks like you've got the same luck as me!

Looks like a sync issue to me. Very much doubt 2 chassis have the exact fault. Check the ohm readings on the yoke plug on the tube first.

Have you got the RGB sync plugged in correct on chassis?

 

[Liam]

Different (previously working) tube, same problem. What are the odds, eh? Yoke readings look normal, 2.2 and about 12.

 

[Liam]

As for sync, I'm using video connectors that worked before. They use only -HSync on the pin at the end of the connector Pin 3. I've used some that have H and V Sync connected, which is not supposed to be done, and they've never caused problems.

 

[Liam]

Looks like I wired up the cabinet wrong somehow. It's alright on my test setup. Stupid mistake, but at least it works.