Question about Memorex MT2271 27" TV

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TV makes a reoeated cricket sound & won't turn on.

As the TV was on, it just turned off all by itself and then started to make this repeated cricket like sound. The TV won't turn back on by either remote or manually on in the TV. It was unplugged for a few minutes and as soon as we turned it back on, the repeated cricket like sound started up again & the TV will not come on. What does this mean?

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Re: TV makes a reoeated cricket sound & won't turn on.

You have a short somewhere in your set. Most likely the horizontal output transistor.The sound that you are hearing is the power supply being overloaded. If the horizontal output is shorted, you probably have a bad flyback (high voltage) transformer. You need to have it checked out by service tech also ask for an estimate. Stargazer

Posted on Apr 10, 2007

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2. A failed horizontal drive or vertical stage, which drew so much current that the switching semiconductor in the SMPS failed.

Note that such failures often occur like dominoes (one, then two, then three, and so on). Sometimes the fuse itself will not even blow out. The best thing to do is to first remove the line-output transistor and then replace the switching semiconductor(s), nearby zeners, capacitors, and fuse if blown. Then turn the unit on and check for about 105V on the collector terminal of the line transistor. If that's fine then turn unit off, replace the line transistor.

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2 Answers

TV makes a repeated cricket sound and won't turn on.

It means that the TV set has a short in it somewhere. The sound you hear is the power supply trying to start up and shutting down. Most likely the Horizontal output transistor shorted because of a bd high voltge flyback transformer went bad. Common problem for these types of sets. Good Luck

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1 Answer

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Sounds like the typical Flyback and shorted horizontal output transistor. Problem is the transformer is NO Longer Available

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