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I have an SVA HD4208TIII-PDP Plasma TV. The TV will not come on.After urning it on, it clicks back off after a few seconds. Every now and then it will stay on. As long as i leave it on, it works fine. Sounds like something sticking on the power supply board but SVA wants 400.00 to replace it.

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  • 4 more comments 
  • caforsee Nov 04, 2008

    The board is made by Samsung, part # PDP-PS-421S. Cleaning the board did not help my problem. There must be a bad componant on the board. Alot of other people are having the same problem with this board.

  • caforsee Nov 04, 2008

    I have unplugged the power. The noise I hear when I turn it on is not a pop o something blowing, its the clicking of the TV. Because the problem comes and goes, something has to be sticking.

  • caforsee Nov 04, 2008

    I cleaned the board using circuit board cleaner. I have no problem replacing the board or the components; I just don?t know which component might be going bad.

  • caforsee Nov 04, 2008

    Can this board be purchashed from Samsung? Where would be the best place to buy it?

  • caforsee Nov 04, 2008

    The link disappeared. The only response I get now is the last post. How can I see all replies?

  • caforsee Nov 04, 2008

    I was looking for some help to FIX the board not buy a new one. If you guys have no experience with this product just say so. I will definitely not recommend this site to anyone.

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9 Answers

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I can see that you're a bit lost here. Scroll and look for the expert named ginko (or just click on the name) - he's the expert in TV's.

Posted on Nov 04, 2008

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Chak your power cable if its ok then see on/off switch if its ok then chak the tansformer of your power supply chak the power supply stage 

Posted on Nov 04, 2008

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Ya it sounds like your power supply failing. Well its out of warranty i suppose so better try this site to get ur power board, in  www.shopsva.com

Posted on Nov 04, 2008

  • AbdulRahiman S Nov 04, 2008

    else u ust need to replace the transistor top 224Y it is on the power supply board


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  • 76 Answers

If you have a warranty simply return it or get it serviced. sounds like the power relay on the board. these things seem to go bad often. shop around for the part. or check tv repair places in your area, they may have spare parts for your model. typically someone brings one in cant afford ow doesnt think its worth getting it fixed. so many places have theses spare units laying around. best of luck. be safe

Posted on Nov 04, 2008

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Sir,

Replace the Whole power supply board it will works..

thanks

Posted on Nov 04, 2008

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A component level repair is not a DIY unless you have the schematics diagrams and the know how. If you can replace the whole power supply is more advisable at this point, you've have been provided with the link where to find the entire assembly.

Posted on Nov 04, 2008

  • Jaime Hernandez Nov 04, 2008

    If you know how all the electronics components work/functionality, you do not have to limit yourself to an specific brand because at the end all the power supplies or any other circuit do the same; regardless of brand or model. Obviously if you came here is because you need help, even more with component level repairs. Do yourself a favor and avoid headaches by replacing the entire assembly.

    Click here to find a power supply vendor.

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F you think you could you could locate the culprit yourself then do your best.
check for bad capacitors, but since its still intermittent, it might be difficult to trace the faulty one.
the usual source of the ticking sound is a transformer.
ticking usually happens when there are shorted components on the circuit.
locate for shorted diodes and transistor.

but if you have no experience in electronic repairs, better have it on a reliable repair center/person.
you could risk your 400 or your whole unit!

trying our best to something we rarely know sometimes lead to accidents.
most of the discoveries happen this way. but not at all times

Posted on Nov 04, 2008

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Try first unplugging the power cable for tem minutes.

A pop noise is often caused by a capacitor blowing.

You will need a technician to test and replace the part that had blown.

Posted on Nov 04, 2008

  • 3 more comments 
  • Ginko
    Ginko Nov 04, 2008

    Cleaning the board?!

    How did you clean the board, clening it with a wet cloth can cause shorts and oxide afterwards.
    Cleaning with a common dry cloth can give electrostatic charges that can burn ICs.
    And hoovering with a big hoover can brack soldering joints and components.

    The ways to clean the board are using circuit cleaning solutions, antistatic clothes, and small battery powered hoovers.

    A common user should not even access the inside of the tv without the right knowledge.

    I agree that $400 is a bit to high fee for a power board replacement. the part is $160, labor starts from $80, the total should be around $300.

    If the technician has already tested the power board, the replacement is not very difficult.

    Here is the part PDP-PS-421S - MAIN POWER SUPPLY

    The repair job should be done by technician.


  • Ginko
    Ginko Nov 04, 2008

    The clicking of the TV is the safety switch that keeps turning the TV off to prevent further damage.
    The safety switch is started by the main CPU because a fault is detected, this can be for many reasons, not always power supply, even if power board is a common fault.
    When this happen we say that the TV is in protect mode.

    About the board cleaning, if you did it in the proper way, there should be no risk of damage to components. It is myt duty to warn users about risks and hazards in handling electronic.

    If you are good at electronics, if TV had already be tested, you can replace the board by yourself, so that you save over $200.
    Here is the part MAIN POWER SUPPLY.

  • Ginko
    Ginko Nov 04, 2008

    Regarding people having the same problems with this TV set, it is like that with all TVS.

    When modern TVs are faulty they normally go in protect mode, stay in standby and start clicking, this can be for more than one reason.

    Oftem when a capacitor has blown you can see the capacitor had been deformed, and often there is a burnt area and smell around the component.

    Often you do not see anything and you just have the fault. In that case you have to follow determined troubleshooting diagrams to find the fault (this is what a technician do if he does not find the problem at a glance).

    An alternative solution is buying an extended guaranty from factory, if provided.

    Many brands will sell you an extended one year guaranty that will cover repairs expenses, to get information you need to call the number listed on the user manual, or call the retailer that sold you the TV set.




  • Ginko
    Ginko Nov 04, 2008

    Samsung usually do not distribute to users, you can call samsung and enquiry for the part.

    If nobody tested the power supply board, then it is not necessarily the power board, and you are going to waste your money.

    My suggestion is: Call Samsung and ask the price for a warranty extension, do the same with the shop were you buyed the TV. The extension may result cheaper than the part price.

    Here are different links to part sellers, all them will sell you the part.

    Partstore.


    Discount-Merchant.com


    eBay (item 140275439941 end time ...



    ShopJimmy.Com - Plasma & LCD TV Parts



  • Ginko
    Ginko Nov 04, 2008

    I re-post a list of all my last comments:




    I
    agree that $400 is a bit to high fee for a power board replacement. the
    part is $160, labor starts from $80, the total should be around $300.

    If the technician has already tested the power board, the replacement is not very difficult.

    Here is the part PDP-PS-421S - MAIN POWER SUPPLY

    The repair job should be done by technician.The clicking of the TV is the safety switch that keeps turning the TV off to prevent further damage.
    The
    safety switch is started by the main CPU because a fault is detected,
    this can be for many reasons, not always power supply, even if power
    board is a common fault.
    When this happen we say that the TV is in protect mode.

    About
    the board cleaning, if you did it in the proper way, there should be no
    risk of damage to components. It is myt duty to warn users about risks
    and hazards in handling electronic.

    If you are good at electronics, if TV had already be tested, you can replace the board by yourself, so that you save over $200.
    Here is the part MAIN POWER SUPPLY.

    Regarding people having the same problems with this TV set, it is like that with all TVS.

    When
    modern TVs are faulty they normally go in protect mode, stay in standby
    and start clicking, this can be for more than one reason.

    Oftem
    when a capacitor has blown you can see the capacitor had been deformed,
    and often there is a burnt area and smell around the component.

    Often
    you do not see anything and you just have the fault. In that case you
    have to follow determined troubleshooting diagrams to find the fault
    (this is what a technician do if he does not find the problem at a
    glance).

    An alternative solution is buying an extended guaranty from factory, if provided.

    Many
    brands will sell you an extended one year guaranty that will cover
    repairs expenses, to get information you need to call the number listed
    on the user manual, or call the retailer that sold you the TV set.

    Samsung usually do not distribute to users, you can call samsung and enquiry for the part.

    If nobody tested the power supply board, then it is not necessarily the power board, and you are going to waste your money.

    My
    suggestion is: Call Samsung and ask the price for a warranty extension,
    do the same with the shop were you buyed the TV. The extension may
    result cheaper than the part price.

    Here are different links to part sellers, all them will sell you the part.

    Partstore.


    Discount-Merchant.com


    eBay (item 140275439941 end time ...



    ShopJimmy.Com - Plasma & LCD TV Parts


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  • 1,913 Answers

Check your power supply waltage and earthing wortrking propewer.
may be your circuit is infected of moisture and dust.clear it.

Posted on Nov 04, 2008

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