STB3.3v = 0.4V on Panasonic p42v10

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  • CapLeaker
    Leaking Member
    • Dec 2014
    • 7964
    • Canada
    #21
    Re: STB3.3v = 0.4V on Panasonic p42v10

    I guess you went as far as you can go, unless you have a very sensitive Ohm meter or a Leakseeker 89. You could cut the little traces of interest and find out that way if the short disappears. However since it seems the IVDD pins are shorted to GND, this is a lost cause and either the chip or the board needs to be replaced.

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      • rvanpruissen
        Member
        • Mar 2013
        • 12
        • The Netherlands
        #22
        Re: STB3.3v = 0.4V on Panasonic p42v10

        Thanks guys. I might try removing the IC in the weekend. I guess the worst that could happen is that I gain some experience in removing IC's

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          • Agent24
            I see dead caps
            • Oct 2007
            • 4913
            • New Zealand
            #23
            Re: STB3.3v = 0.4V on Panasonic p42v10

            There are some good video tutorials on the internet. Hot air is the easiest way if you have the tools and don't want to destroy the IC. Chipquick is also quite good.

            Without either you can cut the leads off with a knife, clean the pads with iron and wick, but then the IC is done. That method is only good when the IC is known bad and you are replacing it.
            "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
            -David VanHorn

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              • rvanpruissen
                Member
                • Mar 2013
                • 12
                • The Netherlands
                #24
                Re: STB3.3v = 0.4V on Panasonic p42v10

                Hey guys, in the meantime I've bought a new signal board. Unfortunately it still doesn't work, but some things have changed. Now when I turn on the TV I hear the relays clicking and the backlight turns on. However, theres nothing on the screen (no OSD), I have 13 blinks and the TV shuts itself down.

                I've had some time to cool down and gather some courage to start over again. Any ideas where to start? Cheers. Rick.

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                  • tw2005
                    Badcaps Legend
                    • Oct 2011
                    • 6457
                    • Australia
                    #25
                    Re: STB3.3v = 0.4V on Panasonic p42v10

                    Originally posted by rvanpruissen
                    Hey guys, in the meantime I've bought a new signal board. Unfortunately it still doesn't work, but some things have changed. Now when I turn on the TV I hear the relays clicking and the backlight turns on. However, theres nothing on the screen (no OSD), I have 13 blinks and the TV shuts itself down.

                    I've had some time to cool down and gather some courage to start over again. Any ideas where to start? Cheers. Rick.
                    13 blinks sounds like another bad A board. New board or recycled/ might be better to send back

                    So the panel fires up? it's plasma so no backlight.

                      Comment

                      • rvanpruissen
                        Member
                        • Mar 2013
                        • 12
                        • The Netherlands
                        #26
                        Re: STB3.3v = 0.4V on Panasonic p42v10

                        "Fires up" indeed, sorry habit from laptop repairs This was indeed a recycled board from a seller who claims it's working. Maybe it isn't...

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