Question about JVC LT-32P300 32 in. LCD TV

4 Answers

Willnot powerup - JVC LT-32P300 32 in. LCD TV

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  • motorcycleis Nov 12, 2010

    Thank you .I will follow your instructions and let you know if sucessful. Mickey L. Harrison I.A.T.S.E.local480 n.m. stage mechanics

  • motorcycleis Nov 13, 2010

    can you decribe what the componets might look like I am testing what I think they are circut boards are not unfamilier but hobby would decribe meplease MR>Wizard help me(Tennesse Tuxedo)

  • motorcycleis Nov 13, 2010

    thank you can you decribe what idems might look like I can see power section of board they have nothing visible so with the meter I go Any more decriptions would be big help PLease MR.Wizard(Tennesse Tuxedo) Thank you M.L. Harrison

  • motorcycleis Nov 14, 2010

    yes I get the standby light then when I try to power up the green light comes on briefly and goes out .I checked the board no visible failuers with a magnifer .Every componet I tested with my meter showed a reading. thank you and any more suggestions before I have to spend for professional local talent?

  • motorcycleis Nov 14, 2010

    thank you for your help

  • motorcycleis Nov 17, 2010

    It has standby power

  • motorcycleis Nov 17, 2010

    yes the detail was quite decriptive and helpful .thank you gentleman Mickey Harrison

  • motorcycleis Dec 22, 2010

    Sorry your advice was no help. Since asking for your help I have replaced both of the large power boards and the button control board.I still get the standby light ,but same problem when powering up momentry green light and nothing .please is there something else other than the screen.

  • motorcycleis Dec 22, 2010

    I replaced both power boards with new and the button control board still same .Since I payed do I still get help?Please other than the screen whats left?

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4 Answers

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  • Master
  • 8,197 Answers

Sorry we are not able to help you please send in for service.

Posted on Dec 24, 2010

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  • Master
  • 4,102 Answers

Hi, could i just ask, when you switch it on at the mains do you get the standby light coming on or is the whole tv totally dead as if no power is getting to the telly, let me know then i can assist you further ok

Posted on Nov 13, 2010

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  • JVC Master
  • 6,993 Answers

Hello,

your TV is having a power problem. The power supply board is defective that's why the TV won't power up. Its receiving power but it cannot transfer the current to the necessary part of the TV because a capacitor, diode, etc may have been faulty. Until these bad components are replaced, the TV might not come on.

If you know about TV repairers, I would suggest that you open the TV and read the power board/panel with a meter, detect the bad component and replace it. Take note that TV stores a lot of current that can shock, so leave the TV for a while before you open it.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you.

Good luck.

Posted on Nov 12, 2010

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  • Master
  • 10,515 Answers

Hi,

The issue you describe is consistent with a power supply board issue.
This is the board where the AC goes to.
I do not think it needs replacement,rather some defective capacitors are causing this issue.
Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.
The value of these capacitors will be different,most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)
You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.
What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).
You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.
Please note:
There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Nov 14, 2010

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Posted on Jan 02, 2017

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