Tip & How-To about Televison & Video

Diagnosing a LCD blank screen problem.

Recently a 3 year old VIzio TV I bought started having problems. The set would turn on normally for a few seconds then the picture would go dark with everything else operating normally including sound. Remembering a similar laptop computer problem I diagnosed previously, I immediately suspected a defective TV screen backlight. To verify this in your own TV, get a very bright flashlight and with the TV operating in the failed blank screen mode, shine the flash light into the blank screen from various angles and distance (including touching the screen). If the LCD is still operating, you'll see a dim motion in the flashlight's reflection, thus proving it is indeed a failed backlight.

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delay in lighting from dark to light scenes and then back.


Look for auto-contrast or something. Turn it off. Picture will be steady. I hate this feature in most flat panel tv's and it's not needed. You may have to set static contrast after that.

Jan 30, 2014 | Vizio 60" E601I-A3 Full HD LED-LCD TV

1 Answer

I have a Vizio 37" HDTV that recently started losing the picture. The sound has been on continually but the picture now flashes steadily but mostly remains black. It went out one day, came back afte


it sounds like a backlight issue. It could be as simple as a few bad caacitors. If you already replaced the set and you just want $$$ toss it on your local Craigslist as a parts/repair set. There's always TV shop owner and parts scavangers that will buy the set as is. Price wise, if the set is in good condition and come with remote, and pedestal, I would ask $60 as is but you may get more

Mar 25, 2013 | Vizio VW37L 37 in. LCD HDTV

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LG DU-42PX12X Plasma, picture startes flashing then goes black after a few minutes


You need to get this tv service asap.i beleive that the problem is in the inverter board or yb board.


good luck

caypianan@yahoo.com

Oct 25, 2008 | LG 42PX5D 42 in. Plasma HDTV

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