Where can I buy transformers in UK

[Ice203]

I'm in need of a transformer for a goodmans TV. Numbers on transformer are
Mlt666bx-t2.
Ymx-604-048.
Can anyone help.

[tom66]

Re: Where can I buy transformers in UK

Is this an inverter transformer, or some other transformer?

[Ice203]

Re: Where can I buy transformers in UK

I think it's a inverter transformer.
Have a goodmans TV that won't turn on. But if I remove this transformer the TV works fine.

[budm]

Re: Where can I buy transformers in UK

But it can be the devices that drive the transformer are bad.

[Ice203]

Re: Where can I buy transformers in UK

I done a few tests on the transformer and I'm sure it's faulty.

[budm]

Re: Where can I buy transformers in UK

Like what? How about the devices that drive the transformer?
Pictures of the board?
This one?
http://www.ebay.fr/itm/MLT666BX-T1-T...item1c2c318ae2
BTW, "Have a goodmans TV that won't turn on. But if I remove this transformer the TV works fine." so how can it work fine without the transformer? Something does not make sense here.

[Ice203]

Re: Where can I buy transformers in UK

Just what I saw in YouTube. Testing ohm's.
Will do pics tomorrow.

[Ice203]

Re: Where can I buy transformers in UK

Yeah that's the board. Removed middle transformer and TV works. Very weird.

[budm]

Re: Where can I buy transformers in UK

There is no inverter transformer on that power supply board.
Those two big one are the power transformers, not sure if they are for the 12V/24V supplies and if they are driven by the same circuit.
DRC on the primary side will show very low resistance, so you think it is shorted out.
Ohm meter cannot really be used to find out if the transformer is really good or bad, you can do comparison reading on the High voltage side but that does not mean if it has shorted turn it is still good because Ohm meter will not be able to show that. You need ringer for testing.
Need to find out how it is driven, if they are driven in parallel, and if the rectifiers in the secondary is shorted, you should check them.
Post good clear pictures of the connectors and the bottom side of the board. Those transformer rarely goes out.

[Ice203]

Re: Where can I buy transformers in UK

Sry. I'm new to all this so might get names wrong. On the board there are two transformers the same. I've removed the bottom one of the two.

[budm]

Re: Where can I buy transformers in UK

I will wait for the pictures, you already check the rectifier diodes on the output side of the transformer that you removed?

[Ice203]

Re: Where can I buy transformers in UK

added a photo of a similar board as not been home yet. the transformer ive removed is circled in red,
just seems strange the tv works without it,

all the testing ive done is from what ive read on this site and your tube,
i also replaced the rectifier

[tom66]

Re: Where can I buy transformers in UK

Can't see any pictures.
Please use "Manage Attachments" feature to upload pictures.

[budm]

Re: Where can I buy transformers in UK

The transfomers may be driven in parallel for the 24V, so if one is bad, removing the bad one will allow the power supply to function at at half power. Need to see the bottom side of the board to verify.

[tom66]

Re: Where can I buy transformers in UK

It's pretty rare to see these transformers fail because they are safety devices. If the windings burn on failure, then it can break down the insulation tape. That is at least according to the power supply guy at my workplace. So personally I would be quite surprised if the transformer were bad.

[budm]

Re: Where can I buy transformers in UK

That is why I would like to see the good clear pictures if the bottom side of the board to figure out what is going on.
I myself never have to replace any power transformer yet.

[Ice203]

Re: Where can I buy transformers in UK

[stj]

Re: Where can I buy transformers in UK

that's a long post

[tom66]

Re: Where can I buy transformers in UK

The photo isn't clear enough to tell, but it looks like the transformers are connected in some kind of series or parallel arrangement. That's quite unusual.

[budm]

Re: Where can I buy transformers in UK

I need better focused pictures of the bottom side of the board.