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Sharp Aquos LC-30hv4u

Sir GURU-

My Sharp LC-30hv4u won't power up and red led flashes four times and repeats. Can you tell me what error code this represents? Local shop want's $100 to diagnose this problem and I suspect the repair charges will be more than the TV is worth. Please e-mail treid(at)san.rr.com

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  • treid Jul 14, 2008

    The display fits tight in a cabinate and heat builds up behind. It seems like there was a fan noise before but not now. I do not have a surge protector. Is there a vane switch that prevents operation if the cooling fan fails, or it can't get air due to dust in the intake?

  • treid Jul 14, 2008

    I don't have a schematic and I do not know if the power supply lives in the display or in the AVC system. This TV has a lcd display and a separate control box (AVC). It has two cables going from the AVC to the display. I have a concern that this email has been routed to your rear screen projection team. I don't know how that happened.

  • treid Jul 14, 2008

    HAI,No vertical Deflection (V STOP), Screen goes to a single horizontal
    line then the video signal muted. Check IC1509, Q1505,CAPACITORS.



    Are you saying that the four flashes from the red power led indicates this? There is nothing at all displayed on the screen. No white line. The led comes on green, thinks for about five seconds, then flashes red four times and repeats.

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HAI,No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505,CAPACITORS.

Posted on Jul 14, 2008

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Check power supply secondary outputs.
· If voltages are present and at proper the level, then the problem is in the Vertical deflection drive
circuit.
· If the secondary voltages are low or missing, then the problem is in the power supply.

Posted on Jul 14, 2008

  • Yaz  S
    Yaz S Jul 14, 2008

    and also use an air compressor and vacuume out all the dust

    hope this wrks

    Thanks for using Fixya

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This looks like a power problem sir.

do you use a surge protector?

Posted on Jul 14, 2008

  • dewan nafees ahmed Jul 14, 2008


    4 blink means a repair would range around 150.00

    No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505

    thank you


  • dewan nafees ahmed Jul 14, 2008

    ok make sure that you use a surge protector always for the unit.

    use a external fan and try cooling the unit.

    it works many times.


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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
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replace the supply board
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How many times does the POWER led flash per second? (Dont worry about the OPC).

1x (steady constant blink) = Lamps or inverters
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3x = Main Unit

If i am reading it correctly, looks like the POWER led is flashing 2x, which means it is a power supply failure. Either way, your TV needs to have a board replaced, there isn't anything you can do to fix it yourself. Try locating your local sharp authorized service center to repair your TV (1-800-237-4277)

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