Question about Westinghouse LTV-27w6 27 in. LCD HDTV
At first it shows a pretty picture then after about 30 minutes or so the picture starts flickering and jumping and stuff.What should I do to fix that?
The problem in your tv is not external.
The problem is in the power supplies internal filtering.
On the primary side of the power supply main board you will find
a large electrolytic capacitor very near the fuse and the primary transformer( the small one). Next to this capacitor you will find a
large 5 watt diode.( black with a silver band at one end). Next to this you will find one lone 1/4 watt resistor. This resistor in conjuction with large electrolytic capacitor is responcible for the internal filtering of the high voltage side of the board. As your unit heats up( anywhere fron 5 to 30 mins) you will notice horizontal
flickering and prior to that red or green or even purple pixelation.
Check this 1/4 watt resistor for dark discoloration and or a bad solder joint on the solder side of the board. This resistor
is directly responcible for controlling the bias current to the high voltage regulators for the 160 volts DC. At no time should you handle or troubleshoot this board with the line plug in.
Even when this board is powered down that capacitor still holds a charge for up to an hour and can knock your you know what
in your sock. If you do not feel comfortable please take the board to someone else. Hope this helps.
Posted on Feb 03, 2008
I had the same problem. They told me it was a noisy signal or power. I cleaned the power with a line filter and unplugged the cable. None of this worked. I sent the TV back and am still waiting after 3 months for a new one. good luck......
Posted on Aug 21, 2007
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