hi,
i have LG monitor when this device warm ,the screen blank and H.V is off and LED green flashing ,
when i unplugged 220V from monitor and plug again
it work again but after 1 or 2 minute it not work.
please help me .
" i have 2 monitor LG 77i and both have this problem"
thank you

check all caps in the power supply it may be a bad cap in the start up circuit

hello rick ,
do you have a schematic of this monitor or can tell me wich worth resistor R544 has?
i had a little burn out ...
thanks a lot

Shematic says 47 1/2.

yeah the problem could be in the caps in the power supply section..