Samsung LN52A550P3FX2A, blinking red light in front. No backlight.

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  • Bertron
    Member
    • Jun 2017
    • 22
    • USA
    #41
    Re: Samsung LN52A550P3FX2A, blinking red light in front. No backlight.

    and just for the sake of completeness this is what I see when I plug it in. Its a crapshoot between a normal image, a solid aquamarine, and a nasty glitched out screen before it shuts off and turns back on again. Its a big improvement over not turning on at all before. I already changed all of the power board caps and double checked that the new ones arent bulging.

    I really want to avoid removing and replacing anything on the brand new board, but it looks like thats the only option I have left.
    Attached Files
    Last edited by Bertron; 07-01-2017, 05:07 PM.

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      • Bertron
        Member
        • Jun 2017
        • 22
        • USA
        #42
        Re: Samsung LN52A550P3FX2A, blinking red light in front. No backlight.

        so I replaced C102 on the new board, and it worked! I had almost given up on this thing!

        thanks everyone for your help!

        in case anyone googles this in the future, I replaced the SMD C102 with a 47uF tantalum capacitor. I am not sure why even after replacing C102 on the old main board it still wouldn't fire up. Perhaps the EEPROM was bad on the old board, but good on the new one. If a klutz like me can do this with a 52 inch, anyone can
        Attached Files
        Last edited by Bertron; 07-01-2017, 07:06 PM.

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          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA
            #43
            Re: Samsung LN52A550P3FX2A, blinking red light in front. No backlight.

            https://www.badcaps.net/forum/showth...ht=c102&page=7
            https://www.badcaps.net/forum/showth...msung+LN52A%2A
            https://www.badcaps.net/forum/showth...911#post616911
            Last edited by budm; 07-01-2017, 08:39 PM.
            Never stop learning
            Basic LCD TV and Monitor troubleshooting guides.
            http://www.badcaps.net/forum/showthr...956#post305956

            Voltage Regulator (LDO) testing:
            http://www.badcaps.net/forum/showthr...999#post300999

            Inverter testing using old CFL:
            http://www.badcaps.net/forum/showthr...er+testing+cfl

            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
            http://s807.photobucket.com/user/budm/library/

            TV Factory reset codes listing:
            http://www.badcaps.net/forum/showthread.php?t=24809

              Comment

              • dick_barton
                Badcaps Legend
                • Aug 2015
                • 6643
                • Wales
                #44
                Re: Samsung LN52A550P3FX2A, blinking red light in front. No backlight.

                Glad you got there in the end. Well done.
                Willing to help but I'm no expert.

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