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Sharp lc-32sb220u lcd tv. Green Power LED flashes steady

This TV just gives me a steady blinking green Power Indicator. Unplugged for hrs. Reapply power and same result. I have electronics background and have fixed many lcd's with bad caps before. If I press the vol down, input and power and hold the tv resets and the power indicator turns red. I then hit the power button and the unit powers on after few seconds (the power indicator stays yellow tho) I removed back and inspected and all the caps look to be in excellent shape (I know this doesnt mean they are good) the Main Control board (with all the inputs and video chipset on it) has a yellow SM LED that is flashing steady when I reboot and power on. If I cut it on and off after doing the vol,input and power reset it will keep cutting on and off for a short time till I unplug the unit. Once I unplug it then I go back to the blinking green power indicator and nothing happens. When it does cut on after I do the reset, i leave it on the tv tuner but it cuts off after a few minutes (but I think that is becuase there is no video signal and it goes into power save mode?) Any help would be greatly apperciated..

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  • Roger Rogerson Feb 07, 2012

    I just went back and rechecked my steps to make sure i explained it correctly. I was off on one part. After I do the Vol down,input,power reset and get the tv to turn on, it cuts off after about 45 seconds and goes back to the blinking green power indicator.
    It will only cut back on if I cut it off and on before it does the 45 second time then suts itself off..

  • Seth Alison
    Seth Alison Feb 23, 2012

    Hi, I have the same tv with the same problem. have you solved it yet?
    Thanks!

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  • Contributor
  • 27 Answers

Okay, I found the problem. There is a problem with the
ccfl (lamp) groung PCB. Mine is completely burnt through. I am going to attempt to repair it, but will likely need to extract it from a different unit. This board is on the front right of the lx in the lamp housing behind the
lcd panel. What is happening: The inverter circuit on the power supply is detecting that one of the lamps is not lighting and it goes into shut down.

Hope this helps!
~Seth

Posted on Feb 23, 2012

  • Seth Alison
    Seth Alison Feb 23, 2012

    And you have a lamp out. Luckily I have a spare from another set. I will list them on e-bay

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  • 4 Answers

I believe you have a problem in your regulater curcuit!

Posted on Feb 07, 2012

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SOURCE: Sharp LC-30HV4U with only steady red lights on

Good day!!!

If you have lit red lights on your TV every attempt to power ON..
That problem is usually cause of bad power supply board or main board..

If you need a step by step procedure on how to troubleshoot your TV you can go to this link and get service..
LCD HDTV ASSUMED TO FIX

Thank you for using fixya...

Posted on Nov 05, 2011

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