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j879
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Last Activity: 07-15-2024, 05:20 PM
Joined: 07-12-2024
Location: New York
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  • I tap out the out-most few pins on the ribbon cable to the last scan/panel board. Maybe it only needs 2 pins but I didn't bother to test each of them.

    I tried tap out the main ribbon cable without luck as I wasn't aware the right most driver board is over heated on few resistors until Iotas pointed out the dark resistor.


    It ends up with a simple tap fix at least for now..

    Many thanks to everyone whom helped and I learnt a lot hop these step will help future readers.

    I'll keep the thread updated if anything else happens later....
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  • Thanks Diah and all others.

    I'll try to put them back when I have a chance. Currently I'm running stress test over night see if it stays. I might damaged one 6514p and need to test it out. I'm afraid I will ruin the scan/panel board when I use the heat gun to put them back...

    Picture looks flawless in both SDR and HDR mode now.

    Another concerns is how long it will last as it starts to fail. These new Samsung TVs really disappointing me on the reliability.. (I have Q8\Frame\Sero)...
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  • Cleanup the residue still the same...
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  • ok, I removed [B]6514P[/B]s​ one by one starting from D001 to D003 without luck..

    blacked resistor remains untouchable.

    Then I tried to tape out the ribbon cable from outermost side for 5 or 6 pins it fix the issue with minor missing interlaced lines.

    Now the temperature went back to normal for the resistor and caps....ok, I removed [B]6514P[/B]s​ one by one starting from D001 to D003 without luck..

    blacked resistor remains untouchable.

    Then I tried to tape out the ribbon cable from outermost side for 5 or 6 pins it fix the issue
    ...
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  • Got 2 more closer pictures now I can see the part/model number. Shall I remove the [B]6514P[/B]s ?Got 2 more closer pictures now I can see the part/model number. Shall I remove the [B]6514P[/B]s ?Got 2 more closer pictures now I can see the part/model number. Shall I remove the [B]6514P[/B]s ?
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  • You are absolutely right. I use an infrared temperature gun measured the the right side as you mentioned with dark resistor, the temperature of the resistors are 10C higher than the opposite side.

    Then I disconnect the ribbon cable to the overheated skinny board the color turns back normal without 1/4 of the display.

    I guess next step is to find out the broken resistor or diodes. The temperature of the protective diode assemblies are normal compare to the other side. I'm going to remove one by one and see what happens.

    Do you know whats the model number of...
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  • Samsung QLED QN75Q8FNBFXZA inverted/negative color

    hi guys,

    My 5 years old SAMSUNG QLED got color inverted somehow. I have tried reset, replace mainboard as well as the driver board without luck. The issue must be on the circuit on panel skinny board or so. For this model I could not find the dedicate T-con board so AS15 replacement is not applicable..

    I have upload the pictures

    Maybe I should measure the gamma voltage but I couldn't find the right place.

    Any idea would be appreciated....
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