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LG55LA620V

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kev1:
Can anyone help I have a LG55LA620V. comes on and screen goes of after a fwe seconds. is there anyway to check screen on this set. or shall I just replace psu.

Turnip:
Hi Kev1,

Not yet met one - Is it Tube or Led lit ? and maybe some idea of panels to give a clue to the problem - Chris.

t1412:
in a dark room shine a torch on the screen bring the menu up, see if you can see it, if you can, the inverters could be in  trouble, check the voltages, also check for dry joints on the driver board. thanks

shaun

downunder:

Hi Kev 1,

Can't be entirely sure, but I expect you have problems with the LED backlighting. Not aware of any test you

can do short of stripping down the panel. These usually suffer from bad joins between the various LED

strips inside the panel. If you do go down the strip road, you may need an extra person to help lift the 55'

panel off.....it's very brittle..             Bruce

kev1:
Changed psu and still the same .So stripped down screen swapped over the cable connectors on the power supply from the leds which started the set up. As one side has 4 led strips and the otherside has 3 strips.But a couple of leds look as if they are failing.
Also backlight is at 100% . When I powered up set it only ran for a short time so turned down backlight to 70% it ran for a couple of hours then turned it down to50% and ran OK . But still seems  to flicker slightly
So I would it looks like the default setting is at 100% which is oviously over driving the Leds.

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