Muller 32'' lcd

[willyam1]

HI TO ALL.
this one came with no backlight and a burning smell.
found in the lip p.s fire in the backlight plug.
i clean the burn area operet it again and its the same start to burn .
i check the 2 10pf 3kv capi ballast are ok i operet it with one left backlight no burning and can see a some light in the screen same with the right backlight.
but when the 2 backlight coneccted star to burn.
i clean again that wont be any short.
the transformer of the high valltage is BCK35346WH 3011.
PRIMERY 0.3 OHM SECONDARY 78 OHM ITS SEEM TO ME THAT THE PROBLEM IN THE TRANSFORMER could be that the secondary is too low?
POWER SUPPLY LS3212003-00-GP.
ANY SOLUTION?
WILLYAM

[tom66]

Re: Muller 32'' lcd

Check bulb connection or bulb isn't shorted to panel chassis in any way.

[willyam1]

Re: Muller 32'' lcd

HI TOM66.
i already check for short in the bulb connection no short to pannel chassis and also the backlight is working for a few sec when its connected seppertly but when they conectted both problem start. i notice tht this transformer was alredy handel by another tech and the custemer told me that the service center alredt repiar the tv and the problem was no backlight a few month ago
willyam

[tom66]

Re: Muller 32'' lcd

Are there several transformers? How do their measurements compare?

[willyam1]

Re: Muller 32'' lcd

only one.seems that the sec is too low?usally its kilohms.
willyam

[tom66]

Re: Muller 32'' lcd

It could well be bad then. That could indicate a shorted turn or otherwise bad transformer.