No light turn on when connected to power. I
Check and replace damaged component/s at it main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts. Do asearch by type in the brand name of your device at its search box.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.
SOURCE: LG 42 plasma power problem
needs power supply Part number 6709900023A
it is a 171 dollar part, you should be able to order through LG,
SOURCE: Lg 42pg20 Plasma Will not turn on
If there is no LED burning to indicate there is power than the power supply is faulty.Repair is not verry easy to do with these complicated power supply's.
SOURCE: LG plasma TV turned off, after the picture very light
I think you have a defective power board. the pop sound in coming from the board and giving you a low output voltage. do it yourself price about two hundred for parts.
SOURCE: LG 50PG20 Plasma,, nothing shows on screen its all black
This model was known for issues with the Y-sustain, Y-drives, and the Z-sustain boards. These boards help process the picture image to the screen.
When one or more of these boards fail, the screen stays black, and you only have audio & on/off.
You could call LG and try to get your TV repaired at a discount if you can convince LG to honor this known issue.
Another issue could be the actual panel has gone bad. The plasma panel in your TV has a two warranty and LG would fix that for free. Well…it would be free as long as it’s not past two years of your date of purchase.
What zip code are you in?
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