Question about Hitachi 43UWX10B 43" Rear Projection Television

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Flashin power light - wont come on

I hear a chirping noise and the front power light flashes in sequence to it when turning on the TV, and TV will not work. When peaking behind TV through holes in the back, one green light (on circuit board) stays green and another flashes to the chirping, too. this occurs at 1 second intervals.

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The "green light flashing to the chirping" circuit may be defective.

Not a basic diagnosis--service literature and/or knowledge of each green light circuit will be needed.Possible shop repair.

Posted on Oct 18, 2007

  • Vista Electronics Oct 19, 2007

    Thank You for the good rating! If I can help further,let me know!..T.



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Posted on Jan 02, 2017

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SOURCE: chirping noise and flashing front power light.

hey techman - when you say shorted do you mean shorted in the IC or where the ic solders to the board?

Posted on Sep 26, 2006

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It sounds like you may be on the right track. Also you could have a problem in your Horizontal Deflection circuit. Since you say it flickered, you may have a solder joint that was arcing. Probably in the horizontal circuit. I found a capacitor which was arcing in this circuit. I was a small disk type. NOW since it is chirping, the horizontal output transistor may have shorted placing too much of a load on your power supply. The noise you hear is the power suppply trying to start. Stargazer

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Chirping noise and flashing front power light.

Theres a short somewhere in the set. Most likly the HOT is shorted or the vertical IC has caused this in the past. In one case I had shorted convergence IC cause this symptom.. This set is solid state and there are no user serviceable parts inside so please call a trained tech to assist you with this problem Good Luck

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