LG 50PQ3000 Y and Z blow

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • PowerAmpFreak
    Badcaps Veteran
    • Feb 2010
    • 982
    • Sweden

    #1

    LG 50PQ3000 Y and Z blow

    Both Y-SUS and Z-SUS board was blown. I've never seen a damage when both these boards are blown in the same failure.
    Anyone familiar with this model?
    Could it be a panel failure perhaps?
  • drpj23
    Badcaps Veteran
    • May 2012
    • 528
    • USA

    #2
    Re: LG 50PQ3000 Y and Z blow

    If the z gets it's voltages from the Y then that's very likely that something faulted in the Y. I would check to see of the power supply is still ok.

    The only time i've seen a panel damage a board it was on the buffer board (but that was on Panasonic's and that was because of shorted electrodes.)

    Here is an article (though may be relevant to older models but still may be for you as well)

    http://blog.coppelltvrepair.com/search?q=x+sustain

    Comment

    Related Topics

    Collapse

    • cmlewis89
      LG 47LB5DF blown power supply board
      by cmlewis89
      Hi folks,

      I'm new to this forum. So my trusty 17-year-old LG 47" LCD recently died. As I was booting it up, I heard a hum followed by a loud bang, sounds of pieces flying around, and loss of power to the unit. Inspecting the PSU, I saw two obvious problems: a blown thermistor (bang + flung pieces) and a visibly bulging main cap. Inspecting as many components as I could with my Fluke MM, I diagnosed that the following components on the "hot side" of the board were also bad: one of the 2 main MOSFETs, main 8A fuse, small cap (25V 47uF) connected to main caps, and a blown...
      09-03-2024, 07:50 PM
    • drscoot
      HP X360 convertible battery blown fuse error, not charging
      by drscoot
      HP Modelnumber: 14-dh0061nb​
      This laptop had a shorted cap on a Vcore section. After replacement is works again. But there is still a battery issue.
      The battery is HT03XL and with the built-in component test from HP, in the Power section, I get an error: Logic State: Calibration required (20), Charge state: Blown Fuse (42)
      I have another same battery, also with error: Logic State: Very Weak (70), Charge state: Blown Fuse (42)
      And a third battery TF03XL (looks identical) with error: Logic State: OK (0), Charge state: Blown Fuse (42)
      All these 3 batteries are charging...
      12-15-2023, 05:54 AM
    • Dororo00
      C377 Blown Up GTX 690
      by Dororo00
      Hello everyone
      Yesterday I saw the component C377 of my GTX 690 blow up, to be honest, I have no idea what caused it but I suspect on the motherboard, since it started doing some weird stuff to other components but nothing destructive, another system I have POSTs with the gpu installed and the corea still get warm as well as the vrm but it seems as I can't get video output. I witnessed the component getting blown up, so I know for a fact it's that one, so I'd like to know some things:

      1.- If there is a posibility that the GPU is still fine itself and just got a single component...
      12-26-2022, 09:20 AM
    • swerg
      Part selection for possible blown inductor on ASUS GX531-GW-AB76 laptop mobo
      by swerg
      Hey everyone,

      I'm a novice trying to repair my laptop. The LCD screen has an image, but no LED backlight for the image. It also produces an image when connected to an external monitor.
      I have found what I believe to be a blown inductor labeled "L4502" and "120 Ohm" in the schematics (zoomed in image, blue arrow to blown component). I have included an image of the general area of the mobo and an excerpt from the schematics as well.
      I am having trouble selecting a replacement component, which I believe to be a 120 Ohm ferrite bead, from the components...
      06-06-2024, 03:39 PM
    • ohren
      Why did my MOSFET blow up?
      by ohren
      I had a switching transistor and PWM IC blow up as part of a repair, where a big chunk of each went missing. Now I would like to understand the likely turn of events, and maybe determine if I did something stupid. If nothing else, I should at least extract some lessons from it.

      "IC10" can be found on page 169 in the service manual:

      https://www.manualslib.com/download/...n-Mas-101.html

      The entirety of the repair is basically:

      1. Device doesn't power on (IC10 supply voltage unstable)
      2. Replaced C18 and C66
      3. Device works...
      04-30-2023, 06:59 AM
    • Loading...
    • No more items.
    Working...