Question about Hitachi 53UDX10B 53" Rear Projection Television

2 Answers

Continued from no picture no sound just clicking

My tv has an odd clicking noise coming from the inside of the tv... no picture no sound but the power light blinks and main board in the back of the tv makes a clicking sound with 2 green lights flashing simultaneously....

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  • Anonymous May 15, 2009

    what sites do i go to to get parts for this tv??

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2 Answers

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  • Master
  • 6,784 Answers

HI, this is total power supply failure. you and a dual power supply unit that, universally, powers all devices directly. there are no ballast in this set so, you will have to replace the Power controls and the fly-back transformers as well. this will fix this unit.


Posted on May 15, 2009

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  • Hitachi Master
  • 19,396 Answers

The TV is on protect mode. The clicking sound is the protection switch that keep turning the TV off to prevent further damage, this happens when a fault had been detected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

Electronic Replacement Parts: Plasma & LCD TVs, Appliances |

Posted on May 15, 2009

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