LG 42LS345Y Backlight with no image

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  • Ierwin
    Samsung UE60KU6079 backlight okay mainboard responsive, no picture, no sound
    by Ierwin
    Hello everyone,
    Ive got a UE60KU6079 on the workbench that is giving me some headaches trying to troubleshoot.
    The previous owner stated that there had been white dots on the screen which from the description sounded like some lenses fell of the backlight LEDs.
    He had opened the TV from the back, trying to get to the backlight, supposedly gave up, reassebled everything and gave the TV to me.
    I expected the worst like ripped COF cables or a cracked panel but could not find anything like that yet.
    Anyway I still fully expect that there has been something seriously damaged...
    05-13-2025, 03:31 PM
  • stylishconsultant
    un60j620dafxza - Samsung No Display Problem
    by stylishconsultant
    Hi All,

    Need help.

    I have a samsung un60j620dafxza led tv. When I plug it in it has no display, no sounds, and no standby lights.

    So I opened the tv and disconnected the power to the mainboard and the backlight powered up. This according to many people says that this is a mainboard
    problem. I checked the voltage coming from the stb and I read 1.3 volts on pins 1,3,5 and 7 which are low volts instead of 13 volts which i think the lcd panel
    might be drawing too much power from the power supply that it prevents the right voltage going to the mainboard....
    09-04-2024, 03:26 AM
  • Salem Aboshala
    820-00138-A got image but no backlight
    by Salem Aboshala
    Dears, this is my first post here and first try to fix my own laptop Apple MacBook Pro Retina 15-inch Mid 2015.
    I have some general electronics troubleshooting experience and still as my hoppy but this is my first laptop trying to fix.

    History: my laptop backlight stopped working without any reason.
    Symptoms:
    I have image on screen using my flashlight.
    I have fully working laptop with the help of my external SAMSUNG LED tv via HDMI cable.
    Keyboard backlight still working and can be adjusted normally.

    Since two days I tried to follow all similar...
    06-11-2024, 03:02 PM
  • zaurus81
    Yashi All in one model AY62409 (Quantum S 24'') no image (backlight works)
    by zaurus81
    This chinese all in one computer gives an image when connected to an external vga monitor but only the backlight with integrated monitor (no image). Initially I thought it was an edid problem on the eeprom of the screen but then I saw that the monitor works correctly with another identical motherboard (model th410-d4, read by bios). Unfortunately the motherboard is chinese and has no brand or codes on the pcb. The format seems ITX. Nothing can be found online. The official yashi site provides drivers but not the bios. The electrical diagram is obviously unobtainable
    The board is equipped...
    01-16-2025, 03:54 AM
  • Constantinos
    Macbook Pro A2442 820-02098 No image but has backlight
    by Constantinos
    Hi all
    I have a Macbook Pro A2442 with the 820-02098 from a friend which has no picture on the display, however, the backlight works.
    He was streaming a football match on a questionable site, then the site crashed, and the problem emerged.
    Initially, he sent it to apple, who quoted him £1323.95 to replace the display, lid angle sensor and top case.
    Obviously, he decided against this and gave it to me so that I could have a crack at it.
    From initial diagnostics, I connected to an external monitor, I first tried with a HP 22W monitor, and I booted into the boot menu...
    08-24-2024, 09:48 AM
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