Samsung DM32D – Red LED blinks 5 times, won’t start (possible mainboard issue)

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  • Nairolf
    New Member
    • Nov 2023
    • 8
    • France
    #1

    Samsung DM32D – Red LED blinks 5 times, won’t start (possible mainboard issue)

    Hello,

    I have a Samsung DM32D display.
    When I try to power it on, the red LED blinks 5 times and nothing happens—the unit won’t start.

    Here’s what I have tried so far:
    1. Disconnected the cable between the mainboard and the power supply → the backlight turns on.
    2. Disconnected the main T-CON ribbon cable → same issue as before, the LED still blinks 5 times.
    3. Disconnected one of the two T-CON ribbons to the panel (tested each one separately) → same issue, the LED blinks 5 times.

    From these tests, I suspect the problem might be on the mainboard. Could anyone help me confirm this?

    The replacement board is quite expensive online, so I’d like to try repairing it if it’s really the source of the issue.
    Does anyone here have a schematic or component measurement points for this board?

    If you need more details, let me know.

    Thanks in advance!

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