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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..
When we turn our TV the humming and buzzing begins! We cn mute it and it goes away and then it when we turn the sound back on the sound is back! How can we fix this?
There is not a good solution. If you read about the Polaroid 37" LCD HDTV, you have a problem and it's the same one that many of us have. According to Polaroid's service center, the control box needs to be replaced. Polaroid does not stand by this product. The company gives you a lot of lip service about how many they sell and how few problems they have - they're lying. The TV's should be recalled and I'd suggest you join many of us to demand it. Write BBB, write the company where you bought the TV, write any consumer group you can think of - Polaroid TV's are junk. Sorry you've got one. Sounded like a good deal and Polaroid used to manufacture quality - no more.
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