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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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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TV WONT COME ON AND THE LIGHT KEEPS FLASHIN RED AN GREEN ON THE STANDBY BUTTON


  1. If your Sony Wega will not turn on, the front green light blinks, you hear a faint whirring sound and the green light turns red and flashes, it probably means the lamp inside the set is no longer working. If you noticed the screen beginning to dim in the preceding days or weeks, this most likely is the cause.

  2. If the green light flashes and the picture comes on momentarily but then goes off, and the green button flashes until the set restarts, then the seal around the lamp mount is loose and needs to be refitted.

  3. If the picture on your Grand Wega cuts in and out and the green standby light flashes, both of the set's STKs need to be replaced. STKs are small chips on your television's circuit boards and are identifiable by their labels. The specific STKs used in your Grand Wega TV will be identifiable by the numbered labels on top of the STKs.

  4. When you plug in your Sony Wega and hear a loud popping sound, it's probably caused by a defect in the high-voltage circuit. Let the professionals take care of this one.

  5. If, after turning on your Sony Wega, you can hear your set but the screen is black, you most likely need to replace your projection lamp.



Read more: How to Troubleshoot a Sony Grand Wega ' eHow.com http://www.ehow.com/how_5243554_troubleshoot-sony-grand-wega.html#ixzz1EoY37gpC

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TV will not switch on


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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