Help - how to test an inverter transformer

[matthmal]

Re: Help - how to test an inverter transformer

thanks for the help guys !

[budm]

Re: Help - how to test an inverter transformer

I do not have a transformer to replace, i am just trying to understand how to know which transformer to use as a replacement if you have a faulty one.

Unless you know the details of the original transformer spec.
https://cdn.badcaps-static.com/pdfs/...7742ac8767.pdf

It is very complicate. You just do not put one transformer in place of the other unless you know what the exact requirement of the circuits, the transformer, the loads. etc.

[SteveNielsen]

Re: Help - how to test an inverter transformer

You replace with a transformer of the same part number and/or specification just like any component. It depends on the one used and they are not all the same, therefor not interchangeable.

[matthmal]

Re: Help - how to test an inverter transformer

But we do not know what the CURRENT TRANSFORMER YOU HAVE, so far you show us the pictures of the transformer from EBAY and from Yong and no pictures of your transformer or the make and the model of what you are working on, how can we when you are not provide good clear information that I already asked for (post 20)?
And your reply is "I am currently reading the ebook of Jestine Yong - LCD Monitor Repair and that is from where I have brought that screenshot. I am trying to learn more about electronics and lcd repairs."

I do not have a transformer to replace, i am just trying to understand how to know which transformer to use as a replacement if you have a faulty one.

[budm]

Re: Help - how to test an inverter transformer

Can you please let me help me understand how can I know which is the right transformer to be used as replacement of the current transformer?

But we do not know what the CURRENT TRANSFORMER YOU HAVE, so far you show us the pictures of the transformer from EBAY and from Yong and no pictures of your transformer or the make and the model of what you are working on, how can we when you are not provide good clear information that I already asked for (post 20)?
And your reply is "I am currently reading the ebook of Jestine Yong - LCD Monitor Repair and that is from where I have brought that screenshot. I am trying to learn more about electronics and lcd repairs."

[matthmal]

Re: Help - how to test an inverter transformer

How about the pictures of the top side of the board? and also the whole board both sides.
What is the make and model of this product you are working on? The more information we get the more we can help.
It looks to be correct as you have marked for the High Voltage secondary winding.

Can you please let me help me understand how can I know which is the right transformer to be used as replacement of the current transformer?

[Ramee]

Re: Help - how to test an inverter transformer

Jestine Yong

[matthmal]

Re: Help - how to test an inverter transformer

How about the pictures of the top side of the board? and also the whole board both sides.
What is the make and model of this product you are working on? The more information we get the more we can help.
It looks to be correct as you have marked for the High Voltage secondary winding.

I am currently reading the ebook of Jestine Yong - LCD Monitor Repair and that is from where I have brought that screenshot. I am trying to learn more about electronics and lcd repairs.

[budm]

Re: Help - how to test an inverter transformer

How about the pictures of the top side of the board? and also the whole board both sides.
What is the make and model of this product you are working on? The more information we get the more we can help.
It looks to be correct as you have marked for the High Voltage secondary winding.

[matthmal]

Re: Help - how to test an inverter transformer

check both.

the primary is the one the power goes into and usually looks smaller if you can see it.
the secondary is the output to the tube(s)

most problems are on the secondary side,
but it's worth checking there is no conection between the primary and secondary.

Hi,

Thanks for your reply. I came through the attached... is that the way that the windings need to be checked?


Thanks,
Matt

[budm]

Re: Help - how to test an inverter transformer

Hi,

Thanks for your reply. I can't seem to find the transformers that I want on that website though. Can I do something else please?

Thanks,
Matt

But so far you have not given us any information or the pictures of the transformer you are trying get or test. You gave the link in post 4 for the Flyback transformer for the CRT.

[matthmal]

Re: Help - how to test an inverter transformer

Go here and look at the transformers to see what typical windings for the inverter transformers are (the secondary side high Voltage )winding will use very small wires compared to the primary winding).
http://lcdparts.net/T.aspx
Click on the 'BUY NOW' button to see the spec and the pinouts.
For example:
http://lcdparts.net/TransformerDetai...ProductID=2727

Hi,

Thanks for your reply. I can't seem to find the transformers that I want on that website though. Can I do something else please?

Thanks,
Matt

[budm]

Re: Help - how to test an inverter transformer

I only use LCDPARTS.NET for ref info only (I used to buy from them because they are close by in S.F), their prices are way too high.

[fzabkar]

Re: Help - how to test an inverter transformer

Go here and look at the transformers to see what typical windings for the inverter transformers are (the secondary side high Voltage )winding will use very small wires compared to the primary winding).
http://lcdparts.net/T.aspx
Click on the 'BUY NOW' button to see the spec and the pinouts.
For example:
http://lcdparts.net/TransformerDetai...ProductID=2727

Thanks for the information.

I notice that LCDparts want $22 for the transformer alone, whereas shopjimmy are selling an entire 4H.V0708.321 inverter (which uses 6 of those transformers) for $10.

http://www.shopjimmy.com/auo-19-2600...t-inverter.htm

[budm]

Re: Help - how to test an inverter transformer

Go here and look at the transformers to see what typical windings for the inverter transformers are (the secondary side high Voltage )winding will use very small wires compared to the primary winding).
http://lcdparts.net/T.aspx
Click on the 'BUY NOW' button to see the spec and the pinouts.
For example:
http://lcdparts.net/TransformerDetai...ProductID=2727

[stj]

Re: Help - how to test an inverter transformer

check both.

the primary is the one the power goes into and usually looks smaller if you can see it.
the secondary is the output to the tube(s)

most problems are on the secondary side,
but it's worth checking there is no conection between the primary and secondary.

[matthmal]

Re: Help - how to test an inverter transformer

each tool has it's own purpose.

the blue ringer is just for testing coils / transformers.

an LC(R??) meter is also for checking capacitors - it also gives real numbers instead of just a bar of leds.

you get what you pay for.

May i know which is the secondary and primary windings of an inverter transformer pls? Which is the winding that I am supposed to check?

[stj]

Re: Help - how to test an inverter transformer

each tool has it's own purpose.

the blue ringer is just for testing coils / transformers.

an LC(R??) meter is also for checking capacitors - it also gives real numbers instead of just a bar of leds.

you get what you pay for.

[matthmal]

Re: Help - how to test an inverter transformer

I never use one of those, I use my SENCORE LC75.
http://www.ebay.co.uk/itm/Sencore-LC...item2358eeb120

That is surely much better but even more expensive. So the one that i quoted isn't good?

[budm]

Re: Help - how to test an inverter transformer

I never use one of those, I use my SENCORE LC75.
http://www.ebay.co.uk/itm/Sencore-LC...item2358eeb120