Question about Zenith Z37LZ5D 37 in. LCD TV

4 Answers

Have a problem with Zenith 37 HDTV. Medel number: Z37LZ5D As wathcing TV, along with 'pop' sound, TV went dead. LG service center gave an advice to unplug the power cord and press ON/OFF power switch about 1 min. Then plug power back and turn on the TV. Well, the green light blink for a while and solid green, but still no screen, no audio. Search the Web and someone suggested to replace Power Supply Board which will fix the problem. Again, search the Web and came out with Power Supply Board. LG Electronics/Zenith 'Power Supply Assembl' with $124.95 from PartStore.com. Is it the right solution? Do I have to replace entire Assembly Board? not just replacing some fuse? Any cheaper way to do? If I have to replce PSA board, any suggestion to how?

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  • rktrade Apr 22, 2009

    I have a basic knowledge of electric and electronics, such as rewiring entire house for renovation and assemble entire computer from scratch.
    Actually, the TV belongs to my father and the problem that I stated was based on what he told me.
    So the question is based on the symptom that I posted, how sure are you that the problem is the Power Supply Board?
    Is it good to order PSB?

  • rktrade Apr 23, 2009

    Purchased 2 and half years ago. Expired one year warranty.

  • rktrade Apr 23, 2009

    Zohail,

    This is LCD TV.
    There is no problem with the wall socket nor current.
    I put other appliances on same wall socket and worked.
    It has to be internal problem.
    As I mentioned on the main post, there was a 'pop' sound while watching and TV went dead.
    Turn on remote control, there is blink green light and then green stays on, but no sound, no screen.
    Turn off remote control, light turns red.

  • rktrade May 14, 2009

    I fixed the TV.

    Orderd power supply board which cost me $136.51 total.

    Replacing was simple.

    Just removed the rear panel cover then electronic board housing cover.

    Took power supply board with all the connector cables and replaced with new one.

    Problem was a transformer connector which got burned and blow up the plastic cover.

    But no problem with fuse and capacitors.



    Thanks all for advises.

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4 Answers

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The problem is that the sound output capacitor has popped and will need to be replaced by a technician unless you have an ohmmeter and can test each capacitor to find which one is bad and then replace it.

Posted on Apr 24, 2009

  • Nate Stansfield
    Nate Stansfield Apr 24, 2009

    If there is no picture or sound, than the power supply capacitors will need to be replaced.

  • Nate Stansfield
    Nate Stansfield Apr 24, 2009

    you may also want to remove rear cover and see if the glass tube fuse is popped or not. If the stip in the middle of the fuse is broken, that means the fuse is bad and you will have to buy another fuse and replace it. I would check this FIRST before any other repair attempts.

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Kindly change the socket from where supply is coming it means wall socket where u tv is plugged in , changing power board in ur tv doent solve ur problem , if u buy this expensive part and may be it will not help u

kindly first check the outer environment

Power Plug of ur TV

AC Wall Socket

Voltage rating from the power socket , check if it is low from supply and may be high

pls confirm all to me then we can go forward

Posted on Apr 23, 2009

  • Shoaib Rais
    Shoaib Rais Apr 23, 2009

    Pls also tell me is it LCD or PLASMA bcoz both comes in in this brand Zenith

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Hi, Well if your TV is under warranty then call the service center and ask them to repair it.Why do it by urself buddy. Thanks! Sandy

Posted on Apr 23, 2009

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If it comes to a replace ment board that is a fair price. matter of fact if you purchase the board over the web rather than a electronics supply shop locally you are wasy ahead of the curve. my advice is however if you have to ask how to replace the board you should not attempt the replacement your self. you should always be safe when working with electronics wether they be plugged in or not. often times even unplugged the unit wil;l still store a charge in it's capacitors. also if not careful static shock can damage other componants in the unit. find a friend to help you or take to a good repair shop.

Posted on Apr 18, 2009

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Have a problem with Zenith 37 HDTV. Medel number: Z37LZ5D As wathcing TV, along with 'pop' sound, TV went dead. LG service center gave an advice to unplug the power cord and press ON/OFF power switch about 1 min. Then plug power back and turn on the TV. Well, the green light blink for a while and solid green, but still no screen, no audio. Search the Web and someone suggested to replace Power Supply Board which will fix the problem. Again, search the Web and came out with Power Supply Board. LG Electronics/Zenith 'Power Supply Assembl' with $124.95 from PartStore.com. Is it the right solution? Do I have to replace entire Assembly Board? not just replacing some fuse? Any cheaper way to do? If I have to replce PSA board, any suggestion to how? Comment posted on Apr 22, 2009 I have a basic knowledge of electric and electronics, such as rewiring entire house for renovation and assemble entire computer from scratch.
Actually, the TV belongs to my father and the problem that I stated was based on what he told me.
So the question is based on the symptom that I posted, how sure are you that the problem is the Power Supply Board?
Is it good to order PSB? Comment posted on Apr 23, 2009 Purchased 2 and half years ago. Expired one year warranty. Comment posted on Apr 23, 2009 Zohail,
This is LCD TV.
There is no problem with the wall socket nor current.
I put other appliances on same wall socket and worked.
It has to be internal problem.
As I mentioned on the main post, there was a 'pop' sound while watching and TV went dead.
Turn on remote control, there is blink green light and then green stays on, but no sound, no screen.
Turn off remote control, light turns red. Comment posted on May 14, 2009 I fixed the TV.
Orderd power supply board which cost me $136.51 total.
Replacing was simple.
Just removed the rear panel cover then electronic board housing cover.
Took power supply board with all the connector cables and replaced with new one.
Problem was a transformer connector which got burned and blow up the plastic cover.
But no problem with fuse and capacitors.

Thanks all for advises.

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