vizio gv42l dead please help

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  • Tynan Dill
    Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
    by Tynan Dill
    I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

    Upon bringing it home and plugging it up, it showed a standby light.

    I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

    The screen seems to blackout and stay black, but with a flashlight I can see the display.

    With my Playstation 4 connected via HDMI, and running a game I can hear sound.

    Assuming...
    ORIGINAL POWER SUPPLY BOARD
    7 Photos
    11-22-2024, 01:46 PM
  • k370
    Yoga3 Pro-1370 Board NM-A321 DEAD no power at all
    by k370
    Hi everyone,

    I have a NM-A321 board that is dead, with no power at all.

    When I received the laptop, the +5VPMIC line was shorted. Removing the PU3 (ISL95905) solved the short, so I ordered and replaced the ISL.

    With the new ISL, the short is gone, but still no voltages at all. I measured the following rails:
    • +3VALW
    • +5VAUX
    • 1.2VSUS_PWRGD
    • 3VALW_PGD
    • 1.05VAUX_PWRGD

    Additionally, the ISL95906 (PU3) is not getting any voltage on the VIN rail.

    The only place on the board where I find any voltage is on the first MOSFETs, specifically:...
    09-23-2024, 11:57 AM
  • howardc64
    TCL 55S425 few horizontal lines, potential failure on both side of panel/buffer board
    by howardc64
    All left and right refers to looking from rear of TV (or looking from front with TV upside down)
    • TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
    • Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
    ...
    07-24-2025, 05:17 PM
  • fharris1977
    Vizio D50u-D1 Dead: PSU or Main Board?
    by fharris1977
    Hi. Anyone who has experience with these vizio sets, which pin on this connector is the standby, the 5V pin? Trying to rule out the PSU before ordering a mainboard. I'm getting 0 Volts on all pins on this connector. Trying to jump the standby and PS ON pins to see if the PSU is functioning. Thanks in advance.
    1 Photo
    03-12-2024, 12:22 PM
  • corrize
    Nikon D5 – dead, power board issue ?
    by corrize
    Hello, the DSLR has heavyly fallen. It is dead : no sign of life and display nothing.

    When it worked, it always displayed a card present state on LCD display, even when the battery is empty it display a empty battery symbol.
    I found a dead fuse, I replaced it and a mosfet burnt, I changed it and another fuse burned. Nothing burned after. And I can't find any short circuit anywhere, it's weird.

    Now, I try to understand how it works.

    There is two boards (the little one on pictures has no component) : the first is a « power board » : managing...
    04-03-2023, 09:13 AM
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