Question about Insignia IS-LCDTV32 32 in. Television

4 Answers

What kind of capacitors are those?

So I've read that there are 3 capacitors on this powerboard. I've taken the powerboard out and indeed the 3 capacitors on the top are blown. The only markings I see is 680uf 35v 105c. I've called around to see who has these capacitors but they also need to know if they are bi-polar or low esr. I am not an electronics expert so I'm not sure how to test these or figure out what kind they are. Can anyone offer any suggestions?

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  • Hoai Duc Ly May 07, 2007

    I looked at the Capacitor again but I don't see anything new. The only markings I've found on it are:

    JH (Manufacterer?)
    CD263
    680uf
    35v
    +105C
    T-5

    Sorry, if I seem like a noob, but in reality, I am a noob at all this lol.

  • Hoai Duc Ly May 07, 2007

    Whoops, forgot to mention. The powerboard number I got is: KAS200-5S242212XS. I've googled it, but all the manufacters are in China. I've even emailed them lol, but no response yet. =(

  • Hoai Duc Ly May 10, 2007

    Thanks for all your help on this. I still don't see any new clues so I'll just look for Bipolar/Low ESR and hope for the best. I mean, the worse that will happen is the board might get fried? but well.....it wasn't working to begin with. =)

  • Anonymous Dec 21, 2007

    i have the same problem

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4 Answers

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Another thought in finding the mfg'r for the power supply;
most companies in the US have their products UL or CSA approved. These products have a UL or CSA listing number and
you can call UL to get the MFG'R name ans address from them
under the listed approval number on the board or serial number.

Posted on Jun 05, 2008

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I am also holding the same board and can confirm that they are not bipolar. standard electrolytic. the three i am replacing are bulging, but i'm not sure if they were the culprit of the malfunction. they seem to still hold a charge. you can order the caps from mcmelectronics.com

Posted on Mar 08, 2008

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I'm holding the same board in my hand and they are not bi-polar.

Posted on Oct 18, 2007

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Have another look at the capacitors you've got. If one of the leads is marked as negative (suppose it's possible that the other would be marked as positive instead, but the standard is usually to mark the negative) then you don't need a bipolar capacitor (for capacitors with one lead coming out each end, look for a band round one end of the capacitor with small minus signs printed on it. For capacitors with both leads coming out the same end, look for a stripe down one side). On the other hand, if there's no indication which lead is meant to be which, you probably need bipolar. If your application needs low ESR, then it needs it. If it doesn't, putting low ESR caps in will do no harm other than pushing the price up a bit and maybe having a bigger footprint. A.

Posted on May 04, 2007

  • Alastair Macleod
    Alastair Macleod May 07, 2007

    Have a quick squint at the picture inhttp://xingchen.en.alibaba.com/product/5...

    The sort of marking that would single the capacitors you've got as not needing to be bipolar is the pale stripe you can just see running down the left hand edge of the component in the picture.

    If you get really stuck, Bipolar, Low ESR capacitors will work in just about any appplication provided you can get them to fit on the board and you match the capacitance and voltage and temperature ratings - they're just more expensive and harder to source.

    A.

  • Alastair Macleod
    Alastair Macleod May 07, 2007

    Extra thought - if you look on the board, are there any clues in the paintwork? If either of the holes the capacitors are mounted into is marked with a plus or a minus, that would be a clue you didn't need a bipolar cap.

    Similarly, there may be a capacitor symbol painted on the board (two parallel bars, each with a wire going to it). If one of the bars is coloured in, while the other is shown in outline only, this also indicates that a bipolar component isn't required.

    NB. If you buy polarised (ie not bipolar) capacitors, make sure you solder them in the right way round.

    A.

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