I have an LG 42PX5D Plamsa TV. I turned my TV and the following happens: the power on light flashes several times whilst the screen is black. Then the screen goes green with a thin white strip up the top. After this the screen goes black with the same thin white light at the top. After leaving for a period of time, the picture starts, but is discoloured with blue and red pixels.
Can anyone help!? This might be due to the fact I turned the power off at the mains while the TV was stil running... maybe, maybe not?
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Re: Green Screen - LG 42PX5D
Hello, seems to be panel trouble, plasma and lcd main panels are not fixable, the color green isnt a good sign or it is a symptom of the panel being bad,
i know its a bad diagnosis but this is true with this color on a panel.
if it is a worth while set and you want to restore it theres few options one is replacement trough your waranty
the another is having the screen replaced by a service center this is to costly and rarely done by them they would advise you to get another set. at a retail price a screen replacement is as much or even more than the tv itself.
finally you may search online listings for a servicable tv same model and exchange the parts .
the third option is the best if your waranty is expired.
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Theres a great possibility
that your Power supply unit has problems
Although the fact that somehow turns on
tells us that you may find some bad capacitors and maybe replacing them might fix your problem
If green light flashes more than 8 times, it could be as simple as repairing or replacing the power supply. Unplug the TV ,remove the back. Look for bulged or leaking capacitors on the power supply. Do it yourselfer? only if you have soldering skills, or purchase replacement board. remember, used boards are just as old as your failed board, buy new or rebuilt, Good Luck
The flashing green light is likely indicative of a self-test failure, indicating the TV has detected some sort of internal fault. With no picture or sound, one strong suspect is the power supply. Flat-panel TV's have an internal DC power supply that converts the inbound AC current, and when these fail, or are unable to supply a minimum level of power to the set, it can behave as you describe, providing only enough power for the green light to illuminate.
If the red light flashes at plug in you likely have a main board that is bad. If you have to press the power button before the red light flashes you likely have a bad bad supply board. This will need to be diagnosed by a technician to be sure of the problem.
Hi, If you had not moved it, I may rule the SMPS (power supply board) went bad. The unit may have suffered excessive shock that it knocked loose a connecting cable or two inside the unit. Don't be a hero though by attempting to pry the unit open. LG generally has a two (2) year warranty and they're super on repair turn around time. Call it in and they'll fix it pronto.