lg lcd42lc7r-ta

[willyam1]

hi.
this tv came with flickring red power led.
changes a few bullging capi and now tv power up ther backlight but screen is blank no osd no pic.
i changed the tcon board no help.
put main board from another tv that i repair and tv ok.
now i know that the problem is in the main board is it a posibilty for a reset or maybe eeprom or software couse costumor dont wont to pay the price for another main board.
by scopingin the lvds cabel ther vcc and also analog signal.
so what could be the problem?

[Foppel]

Re: lg lcd42lc7r-ta

You can check the voltage regulators. Here is a good video: https://www.youtube.com/watch?v=cNFzBJELFoU

Read the FAQ: https://www.badcaps.net/forum/showthread.php?t=25836

best regards - Foppel

[willyam1]

Re: lg lcd42lc7r-ta

thanks foppel.
all reg werer chack all ok.
the main board is chasis LP78A(B) EAX325725506.
ANY OTHER AIDIA.?.
THANKS WILLYAM1

[willyam1]

Re: lg lcd42lc7r-ta

solved-I change the eeprom 24c32 a blank one tv works ok.
willyam