LG 47LW6500 powers on no backlight

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  • malogro
    Acer Nitro 5 AN515-55-55M1 [GH51G mb] powers on, no vcc_core
    by malogro
    Hello all,

    I'm stumped on this guy, so wanted to see if anyone has any further ideas:

    Intro:

    This is an Acer Nitro 5 AN515-55-55M1 with unknown prior history (bought "as-is" on eBay). It charges the battery and powers on from both AC adapter and battery, so I think this rules out main power issues.

    Upon attempt to boot, it will "reboot" (meaning powers down and then powers on again) only once, and then stays stuck in a status of lights on / no post / no monitor. Powering on with fn+esc maxes out the fans on first boot attempt,...
    04-14-2023, 04:44 PM
  • jose6326
    Samsung s32d850t powers off
    by jose6326
    Powers on as normal shows an image then powers off after 10 seconds

    I have to unplug it from the wall and replug to get it to turn back on but then shuts off

    No blown caps
    I searched for this model but nothing comes up...
    3 Photos
    11-29-2024, 11:21 PM
  • simwalsh
    Philips 47PFL4606 Powers on, works normal then powers off after a minute
    by simwalsh
    Hi,
    I am new to this forum and have searched for some answers with problems similar to mine.
    Philips TV powers on as normal for about a minute or less then click and no power at all not even standby light. If i disconnect from mains and reconnect it will power on again but for a shorter time. Once i leave it disconnected from main for a longer time it will power on for a longer period the next time.

    It sounds like a power supply issue?

    I have the board out and want to run some tests. Not sure what i should be doing but i put a 1k resistor across SB and +5v...
    12-04-2023, 04:03 AM
  • csmith
    Vizio D50u-D1 Powers up no picture
    by csmith
    I replaced the backlights all good. Two months later set was dead, had a shorted D9100, replaced all good again.
    Now months later set powers up,backlights light ok,no picture. 12volts missing from fuse on tcon. 12VA on power
    supply is 19 volts. Changed D9100 again, same, 12 volts measures 19. Am I looking at a power supply or mainboard
    issue. Set will power up with remote but not power off....
    07-11-2025, 11:52 AM
  • Chivo77
    DELL LATITUDE 5420, ST 20TFKN3, LA-K491P REV:2.0 (A01) powers on and die about 15 secs later, no video
    by Chivo77
    hello friends, I have a DELL LATITUDE 5420---MODEL P137G, ST 20TFKN3 LA-K491P REV:2.0 (A01) and its quite a challenge. It powers on with the battery disconnected, lasts on for about 15 secs, and then shuts off. It does the same with battery only (no adapter). With battery and adapter it sometimes starts after hitting the button several times. It displays nothing in every case. Since only the Boardview is available, I guided myself with schematics similar to this laptop (I'll add them down).Some measurements:

    1- After receiving power SIO_SLP_S0# goes high and never changes.
    2-every...
    07-03-2025, 09:20 AM
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