Question about HP LC3760N 37 in. LCD HDTV

1 Answer

Tv powers on with pic and sound for 3 sec then off with green power light flashing.

After that the tv locks out. I have to hold the channel button and the input at the same time and plug it in. But does the same thing every time. No markings on any of the circuit boards to know what the voltages should be.

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  • 2 more comments 
  • Kennith
    Kennith Apr 14, 2015

    I have tried looking for a manual also, I am hoping someone has had the same issue for help.

  • Chris Neary
    Chris Neary Apr 15, 2015

    take a look at the supply board and see if the capacitors have popped. From doing some reading this is a common fault with this device (and probably every other PSU on the planet).

  • Kennith
    Kennith Apr 15, 2015

    The power supply looks ok no popped caps I ordered a power supply today and I will post if it fixes it or not.

  • Kennith
    Kennith Apr 21, 2015

    Replaced power supply board with a new one and still same issue. Im leaning on the main board, i can unplug inverter board and does the same green flashing light after hard reset.

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  • 369 Answers

That sounds like the safety shut down for the power supply board kicking in.

You could shotgun repair it by replacing the board but without a manual it's a bit like shooting in the dark and I can't find the repair manual out there, but here's and idea of the component modular board costs.

http://www.shopjimmy.com/hp

Posted on Apr 14, 2015

Testimonial: "Yea I can't find anything on this tv and not work putting any money into. I had someone tell me the lamps are bad but they all test and look normal."

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May I know if the LED light at the front panel has a pattern of flashes or flashing continuously in green color.

Please check if you can access the "Self diagnostic screen" by following the steps below.
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    2.Slide the mode switch at top of remote to "TV".

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    4. While still holding down MUTE, press and hold the SELECT button until green light at the top of the remote flashes twice.
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