Question about Polaroid TLA-04011C 40 in. LCD TV

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During a thunder storm our polaroid tv went out..we have changed the fuse but it still isn't working..any other suggestions?

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Call your homeowners' insurance agent. Seriously, if the set is worth more than your insurance deductible, you will want an expert evaluation on whether the set can be profitably repaired so you can make a claim if necessary.

Was the first fuse blown? Did the second fuse blow? If the answer to both questions is yes, then you have a fried power supply switching transistor - at a minimum. You might even see cracked or burned parts on the board that has the fuse on it (look at the parts on or near the finned metal radiators). Lightning typically damages a number of parts. You may find it cheaper to replace the entire power supply board, and hope the rest of the set isn't damaged.

If both fuses are good, that could be worse news, because that implies lightning got in through the antenna/cable input and zapped the main circuit board. This is the second-most expensive part of the set after the LCD panel.

A suggestion for "next time": if a TV set blows a fuse, get the problem fixed first before risking a new fuse on it. It's rare that a power surge blows the fuse without also breaking something else. The fuse is intended to minimize damage and prevent fire in case something in the TV shorts out or the surge protection components are unable to handle a high energy pulse on the power line. It's not guaranteed to protect the set from damage.

Posted on Oct 24, 2010

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