Mains transformer tap. PYE P32QTG gramophone.

[PeterPYE]

Hi
Any advice on repairing this? You can just about see in the pic that the winding tap has come off the middle terminal. When I inspected the unit before I started work I noticed that it was only hanging on by one strand. So I've carefully pulled it off with the intention of re-attaching it. Other than that the resistances are all good.

[Sideband]

Originally Posted by PeterPYE

You can just about see in the pic that the winding tap has come off the middle terminal.

No picture so it's a bit difficult to advise......

[PeterPYE]

Damn I knew I’d forget the pic sorry. It’s on the secondary by the way.

[Robert Gribnau]

I am not sure if I see the problem correctly. Is it an interruption between the two copper looking 'stubs' as pointed out by the arrows? If so, than it looks to me that with a small piece of blanked wire and some soldering it would be possible to reconnect them.

[PeterPYE]

Not quite. The blue arrow is pointing at the thin tap wire sticking out at about 45deg and covered in pitch. I'm not sure if it was once insulated like the two on the left. The two on the right are also not insulated. It will need extending to reach the middle post.

[snowman_al]

Remove (carefully) the pitch from the broken wire with petrol or lighter fuel.
If you have clean shiny copper showing tin it with solder.
If it has enamel insulation still, then very carefully scrape it off so you have shiny copper showing, now tin it with solder.
Make a good connection to the tag with a piece of single core wire and then solder the broken wire back to that.

What is it on the transformer secondary? A centre tap, a voltage output etc.?
If it is two wires twisted together, clean them both and solder them back together, then repair as above.

[PeterPYE]

Its a single wire and the output to the first anode on an EZ40 rectifier valve.
Cheers.

[Station X]

What's the equipment?

Looks to me like there are two secondary windings. A low voltage LT winding, as indicated by the thick wire, for the heaters and a high voltage HT secondary winding with a centre tap..

From your description the broken wire is one end of the HT winding rather than the centre tap. That would be consistent with there being a single wire/strand.

You say that resistance/continuity readings are OK, so just repair the transformer as described in previous posts.

[PeterPYE]

I'm working on a PYE P32QTG gramophone. I've fixed the broken wire and just powered up the TX. From left to right, 1st & 3rd terminals supply the anodes at 400V between anodes. The 3rd and 4th terminals are the heater supply at 6V. Checks out with the service sheet.

[PeterPYE]

Originally Posted by Station X

What's the equipment?

Looks to me like there are two secondary windings. A low voltage LT winding, as indicated by the thick wire, for the heaters and a high voltage HT secondary winding with a centre tap..

Spot on