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There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. http://en.wikipedia.org/wiki/Capacitor_plague Please post back what you find.
Your inverter boards need to be tested and serviced, these are circuits designed to control the light behind the LCD glass panel. It could also be the power supply not feeding 24volts too the inverter circuits. In that case the power board would need servicing.
Take it back if its under warranty if not get it serviced at your local repair center..
Check to make sure your selected inputs are correct ( ie cable, TV, antenna, VGA, etc).
Next, go to "menu", then "Settings", then "Factory Reset" and see if that works.
You might try to run the auto channel setup as well.
If none of these work-- or if you end up with audio but no video-- then your TV is junk. Polaroid will offer you a repair service for a flat rate of $100 if you ship the TV to thier facility in NY at your cost-- but that's not really cost effective as the TV only costs $150.
Personally, I'm done with Polaroid products-- they just don't last much more than 2 years.
possibly external power supply faulty under load it may fail these power supplies ofen have capacitor failure open the power supply to check for leaking/bulging/swollen capacitor is around 2000uf rated at 12v
Hi you may try
1)to key the auto(adjust) button at TV monitor keyboard if not ok,
2)to change display pixels density from PC display setting because TV monitor could not support the display pixels you using and sync.the picture on well.
3)also you may adjust monitor screen H position(it maybe not convenience for back TV).
I have a polaroid FLM-323B flat panel Tv. After it is on for awhile the TV starts buzzing and the picture starts to blink in and out. Can you help me with this?
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