Philips 32PFL3505 Random SHut Off; Now won't turn on

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  • Commodore 64
    New Member
    • Jun 2014
    • 7
    • USA
    #1

    Philips 32PFL3505 Random SHut Off; Now won't turn on

    Behavior is similar to a Samsung TV on which I replaced power supply filter caps, so I wasn't too alarmed when the TV would randomly turn off. It would always turn back on, and I figured I'd fix it when I had to. So now it turned off and will not turn back on. The LED Indicator is a white light. It flashes when you hit the power button, seems like the TV is warming up to fire, and then the light just turns off.

    I checked the resistor right next to the fuse, and it checks out OK. No bulging caps or melted IC, or burned resistors that I can see. So I guess I need to trouble shoot. So I guess I'm looking for a troubleshooting service manual for this, but not sure how to find one.

    I build and repair tube amps, so I'm pretty handy with an soldering iron.
    Attached Files
    Last edited by Commodore 64; 06-09-2014, 06:57 AM.
    Tags: None
    • Caleb
      Smokin IC's
      • Feb 2013
      • 645
      • USA
      #2
      Re: Philips 32PFL3505 Random SHut Off; Now won't turn on

      that sure looks like it was made by funai judging from the internals, found a service manual for you (attached below) if it is a funai start by checking all the zener diodes and output diodes for shorts.
      Attached Files
      Liberating magic smoke one part at a time

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        • Commodore 64
          New Member
          • Jun 2014
          • 7
          • USA
          #3
          Re: Philips 32PFL3505 Random SHut Off; Now won't turn on

          Awesome! Thank you so much.

          Do the diodes need to be removed for testing or can I just go leg to leg across the diode while it's still on the board?

          edit: https://www.youtube.com/watch?v=i4jTHhXuKLA

          Watched this, so I think I may need to test both in and out of circuit. HE just removes solder to "take it out of circuit". He doesn't actually remove it from the board. I would think it would still be making contact. Or are the vias not through-plated?
          Last edited by Commodore 64; 06-09-2014, 09:50 AM.

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