Philips PUS6501 - no picture

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  • dskall
    Badcaps Legend
    • Oct 2016
    • 2905
    • usa
    #21
    Re: Philips PUS6501 - no picture

    Since things seem to be intermittent. I would heat sections of power board and note any difference. Also check solder joints with a magnifying glass.
    I assume no responsibility for any stupid suggestions I might post.

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12116
        • U.S.
        #22
        Re: Philips PUS6501 - no picture

        Originally posted by dskall
        Since things seem to be intermittent. I would heat sections of power board and note any difference. Also check solder joints with a magnifying glass.
        +1, heat up the caps with a hairdryer, see if it turns on.

          Comment

          • nomoresonys
            Badcaps Legend
            • Jan 2013
            • 12116
            • U.S.
            #23
            Re: Philips PUS6501 - no picture

            Kind of suspect a capacitor, if it isn't a backlight connection or led.

              Comment

              • betmen
                Senior Member
                • May 2019
                • 90
                • Croatia
                #24
                Re: Philips PUS6501 - no picture

                I removed 4 electrolitic capacitors C8120-C8123, all four are good.
                I measured two smd capacitors in circuit and they are not in short circuit and R8148 is OK.
                Earlier I seen that optocoupler U9306 in stanby circuit have 0V on pins 3-4 on transistor, I wonder is that relevant?

                Also there is no intermittent LED light any more, LEDS are not working at all, but when I test it with backlight tester on connector they are working.

                Any new ideas?
                Last edited by betmen; 02-20-2022, 10:06 AM. Reason: addition

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