Need to diagnose what board is bad on my 26pf9966/37 lcd tv
I am looking for an educated guess as to what board is bad based upon the flickering of the screen and the screen picture looking like a green sepia picture. I also need the parts list to order the stand bracket that mounts on the units back for the table stand. I have all the parts but the bracket that gets screwed into the back of the unit.
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First of all, I'm so sorry you are in this situation. This is a story I'm hearing all too often. Did you have the set on a surge protector? What you are describing sounds like a main board failure but the set will need to be diagnosed to be sure. Playing a guessing game with TV repair can get quite expensive. Being that it is a newer 55" LCD, I'd say it's worth paying a professional to diagnose the set. Once you get a proper diagnoses, you could easily order and install the board yourself and save $$$
The set will need to be properly diagnosed to determine the cause. You could have a problem with the power supply board, inverter board, CCFL backlight that could be going out, or possible a main board issue. There are a variety of things that could cause this. You don't want to play the "guessing" game on this one. You also may want to google you TV model # and see if there is a history of this problem with your set. Most TV problems are redundant.
More likely to be the backlight inverter board, or the main power supply for the inverter board is bad, power supply is easier to get to than the inverter board, so look there first. Look for burnt parts, bad capacitors. http://en.wikipedia.org/wiki/Capacitor_plague
Most likely it going to be a power supply related problem. The red blinking light is a code for a TV tech to diagnose the problem on the main power supply board itself or the board that regulates the power for the screen. Some manufactures call it a Backlight Inverter Board. A TV repair shop should be able to look at it for you and tell you which board is bad. Replacement boards can be found at a good price at Shopjimmy.com