UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Travellingwave · 24th Feb 2021, 2:45 pm

Hi Helder

No I didn't I was a bit worried that if I covered the whole thing in varnish inside the primary that it would not neccesarily get to where it needed to go and would make a hell of a job to dismantle if a fault subsequently occured. SO I just coated the overwind.

I have just checked and I have have about 50 ohms between the primary and secondary of the transformer with it still in circuit - I have read that they often fail with secondary to primary shorts - if I measure in circuit I presume there should be no resistance here?

Looks like lopt is going to have to come out

24th Feb 2021, 2:45 pm	#173
Travellingwave Pentode Join Date: Jan 2021 Location: York, North Yorkshire, UK Posts: 155	Re: My first telly TV22 Hi Helder No I didn't I was a bit worried that if I covered the whole thing in varnish inside the primary that it would not neccesarily get to where it needed to go and would make a hell of a job to dismantle if a fault subsequently occured. SO I just coated the overwind. I have just checked and I have have about 50 ohms between the primary and secondary of the transformer with it still in circuit - I have read that they often fail with secondary to primary shorts - if I measure in circuit I presume there should be no resistance here? Looks like lopt is going to have to come out