Samsung ln40b630n1fxza Issue

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  • Asraf Atb
    Help Needed: Samsung UE55MU8000 Dead - Possible Main Board Issue
    by Asraf Atb
    Hi everyone,

    Im looking for some advice regarding my Samsung UE55MU8000 TV with main board model BN94-11606C. The TV suddenly stopped turning on and now shows no signs of life at all not even the standby light at the bottom.

    Initially, I suspected an issue with the PSU, so I took it to a repair center. They tested it and confirmed that the PSU works perfectly, even on other TVs. Based on that, I started investigating the main board.

    I disconnected the main board from the PSU, and the backlight turned on, which seems to confirm the main board is the issue....
    01-27-2025, 05:02 PM
  • ohren
    Upgrading a Samsung ue55nu7096u with logic board from an ue55ru7105k -- good idea?
    by ohren
    I hope this is the right forum to post in despite not technically being a repair, but still a question of swapping boards.

    I thought I'd explore the possibility to upgrade an existing working Samsung ue55nu7096u with the logic board (and power board if needed) of a newer model (ue55ru7105k) of the same size and appearance (and resolution). The reason being I'd like the extra inputs of that board including component in, an extra HDMI port and bluetooth. Its panel is broken so I have no use for the board otherwise.

    The models launched in 2018 and 2019 respectively....
    09-08-2023, 05:24 PM
  • C152Heavy
    Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board
    by C152Heavy
    Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board

    Summary for TL-DR readers:
    • Backlight is intermittent, may come on with TV boot or not. No flickering, never fails during TV on.
    • Have obtained Samsung schematic & service documents - Can upload if helpful.
    • Have read ALL applicable threads
    • C1818 and CP820 replaced as low hanging fruit
    • CN802 data taken for normal and failed BL operation. SUMMARY: Pin 2 - 5vDet = 3.52 @normal, 0.0 @BL fail. Pin 6 - EPWM = 1.631 @normal, 1.058 @BL fail.
    • VCC pin (18) of PFC...
    01-11-2023, 02:53 PM
  • Kjell
    Samsung Series 9 - BIOS issue
    by Kjell
    After installing Linux, I can no longer enter the BIOS of my Samsung Series 9 (NP900X3C) laptop. When pressing [F2] during boot I simply get a black screen. Same thing when pressing [F10] and choosing "Setup" from the "App Menu" tab. Apparently this is a relatively common issue with Samsung laptops of that generation, but unfortunately i haven't been able to resolve the issue (yet).

    Things i've tried so far; reinstalled Windows 10, checked for redundant boot entries, tried to factory reset using the emergency keyhole, attempted to clear the NVRAM by physically...
    08-01-2025, 09:15 AM
  • alltvrepairs
    Samsung UE65RU7090UXZT main board issue no video out. BN94-14180M
    by alltvrepairs
    Hi,

    I have confirmed that I have a mainboard problem.
    I have tracked no hardware issued on board so might be a software dump required.

    I have searched a bit but wasn't able to find anything for my screen:

    Here are some more details:
    Panel: cy-nn065hgev1h
    Main: BN94-14180M P08F

    Your help much appreciated!










    ...
    05-16-2025, 03:03 AM
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