Question Need new High Frequency Transformer? Asus Monitor

[Dan83111]

Hi,
I think I need a new transformer for the power board in my Asus VE276 LCD monitor. It looks like something is wrong with it to me, all the caps are fine. Basically it turns on but after it has been receiving a signal for a while it dies and wont turn on again unless you completely unplug it for a fair while and then replug it in. I had a PSU die in my PC and blow sparks out of it and the screen went bad from then.
My question is do you think I need to replace the transformer on the power board and if i do how do i source one? Can i buy a similar one that will do the job fine?

 

[Grobe]

The transformer is very unlikely to be the source of the problem, those are very sturdy components. Capacitors and power transistors however, is way more fragile and tend to be the faulty components.

A warning: be aware that some of the capacitors still holds mains voltage and you may get shocked if improperly touching it.

 

[Dan83111]

what about all that crud all over it? kinda feels like sticky sugar, there is a burn mark on the other side of it on the power board backing cover

 

[Dan83111]

That burn mark is on the exact other side of the transformer

 

[Grobe]

Still - overheating of the transformer is still a secondary problem if the power transistor doesn't turn off.

 

[Dan83111]

ok fair enough and the burn is from a different area on the board it turns out, from a totally different transformer actually.
Is there any way I can easily work out what the problem is and fix it?

 

[Grobe]

Is there any way I can easily work out what the problem is and fix it?

Do you understand how a smps works?
https://en.wikipedia.org/wiki/Switched-mode_power_supply

 

[Dan83111]

Only a little bit

 

[Dan83111]

Only what I know about PC power supply units i guess