LG Monitor White Screen

[jmulla]

White screen = TFT matrix in off (default) position + pure backlight on full blast. This can only mean one thing, since your PC detects (via plug n play) your monitor: your flat/ribbon cable, going from the MCU board to the panel has come out of the connector. Once you properly re-seat it, your monitor should spring back to life. There is a minor chance that something else is wrong in addition to this, but try reconnecting the ribbon cable first, then if it doesn't help, post pictures of the inverter/power board and the MCU board, so that we may help further.

Hi McSteel:
I have an LG L226WTQ that has gone into perpetual white screen mode. I have read different opinions about whether the "capacitor replacement fix" will repair the white screen problem or whether that only fixes dead monitors that don't turn on at all. I believe the failed caps result in the power module failing. Wouldn't that mean that the back light would also not come on? So, would the cap fix help with the white screen problem if the back light is working well, but there just isn't any video signal coming to the monitor. Help?!?!

 

[OneMoar]

 

[Black Panther]

If you read the first page carefully you'll notice that the OP solved his problem 7 months ago.
Hence it's useless replying now and it's appreciated if old threads aren't resurrected this way.