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Capacitor change for LED TV PSU

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    Capacitor change for LED TV PSU

    I have a Hisense LED TV with a faulty PSU.

    Found out one of the caps on the PSU is bulged and it makes a chriping noise, while the screen flashing a white line in sync with the noise.

    Now I want to replace that cap which is a CD288HC and it's most probably a 25V 330uf. I say most probably because the cap print only says the voltage, not the capacitance. Also, I measured it's size and it corresponds with the datasheet.

    Now I need to find a replacement cap, in fact 4 because maybe I should change all of them.

    Now I cannot find one with the same values anywhere, which is also in stock so I don't have to wait for weeks.

    I found however a 25V/470u one which is also low ESR and imp. rated.

    Would it do the job? I know higher voltage rating is okay, but I don't know if higher capacitance is okay too?

    The other option is 35V/330uf but they are not low ESR/imp rated.

    What should I do guys?

    Thank you!

    #2
    Re: Capacitor change for LED TV PSU

    Generally speaking you're safe going up on both voltage and impedance. In your example the 25V/470uf will work.

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      #3
      Re: Capacitor change for LED TV PSU

      Originally posted by nortnil View Post
      Generally speaking you're safe going up on both voltage and impedance. In your example the 25V/470uf will work.
      That's good to know.

      Someone recommended me going with low ESR caps for TV PSU-s.
      So that's what I ordered. Hope they will do the work.

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