LG Flatron L1750S vertical issue

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  • Ancient1
    Strange LG TV issue : Image vertical lines in black screen
    by Ancient1
    Hi

    Asking for a friend.

    I'm used to black vertical line in otherwise good image - probable solution is a rubber to push and tighten the COFs bonding.
    but here its the opposite !

    TV has new T-con = same issue
    A missing panel voltage would have global effect

    So , what should one do ? how can I find where the fault is ?

    Thanks !...
    02-05-2025, 03:37 PM
  • Superluminal
    LG 47LV5500-UA Vertical Colored Lines/Alignment Issue
    by Superluminal
    Hi all, looking for some input on this one. I've been reading the forums for quite some time but this is my first time posting for help.

    LG 47LV5500-UA
    10 years old
    20,000+ hours on it.

    Watching TV on it last week and right while I was watching the image suddenly started experiencing the symptoms in pics. Rainbow chromatic vertical lines and alignment issues. The issue is uniform across the entire panel. It does not come and go, the symptoms are stable.

    Here is what I've tried so far:
    - Factory reset and cycle of picture options....
    11-19-2022, 07:41 PM
  • rounin
    MacBook Air A2337 (820-02016) USB-C Port Issue – Only Works in One Orientation (CC Line Problem?)
    by rounin
    Hi everyone,

    I'm working on a MacBook Air 2020 (A2337, board 820-02016) and running into a strange USB-C issue. I've gone through quite a bit of testing and part replacement, but I'm stuck — hoping someone here can shed some light.

    🛠 Original Issue
    The machine initially wouldn't negotiate 20V over USB-C — stuck at 5V.
    Diagnosis showed PP1V5_UPC0_LDO_CORE shorted to ground.

    I replaced U3100 (UF400) using a donor board (A2179), and the machine powers on fine now.

    ⚠️ New Problem: One USB-C Port Only Works in One Orientation...
    04-19-2025, 01:18 AM
  • ugamazing
    Three 820-01700 32GB Logic Boards Same Issue: Won't Wake From Hibernate
    by ugamazing
    I have three identical-spec 820-01700 boards (2.6/32/512), and ALL THREE boards came to us with the same fault, from different sources: The boards don't wake from hibernation with the keyboard or lid, they ONLY wake when you press the power button. I understand this is a very minor issue, but the boards must be fixed!

    We will of course begin with the obvious (checking lid signals), but I couldn't help but notice these three boards were all 32GB variants. Has anyone noticed an issue relating to these 32GB boards in particular? I of course don't think it's a RAM issue, but it's bizarre...
    12-17-2024, 07:05 PM
  • shahnld
    Lenovo legion 5 pro startup issue
    by shahnld
    Good day Experts
    I have a lenovo Legion pro 5 16ACH6H with AMD RYZEN 7 5800H and RTX3070,.

    A weird issue has troubled me. If i power on off the laptop 20 times then only power LED will lit but no fan spin no display. At this stage gpu, vram. DDR voltage. 5v 3.3v 1.8v and the rest are present and cpu core is stuck at 0.84v.

    And sometimes lets say the 21st time it will boot perfectly and there is image and everything is working perfectly and at this stage i see cpu core...
    08-24-2025, 12:31 PM
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