lg42px5d standby issue

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • allnighta
    New Member
    • Mar 2013
    • 3
    • uk

    #1

    lg42px5d standby issue

    first off a big hello and respects to everyone in the forum

    ok so i got the above model which when powered up the front led cycles through from red to amber then to green and back to red

    checked caps on psu and looked ok but changed 6 of them anyways with a repair kit for that board, tested the VS and VA when the ysus and zsus were disconnected and there are ok at 186 volts and 60 volts

    the plasma powers ok when the ysus is disconnected, so i replaced ysus with a compatible one and it still goes back to standby after starting up so i am starting to think the buffer board could now be at fault, fuses are ok on the ysus and every were else

    any help appreciated

    thanks in advance
  • allnighta
    New Member
    • Mar 2013
    • 3
    • uk

    #2
    Re: lg42px5d standby issue

    bump

    Comment

    Related Topics

    Collapse

    • 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
    • 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...
      11-22-2024, 01:46 PM
    • proditaki
      JBL ES-150-P standby issue
      by proditaki
      Hello,

      I recently bought a faulty JBL ES-150P subwoofer that was completely dead.
      After replacing 2 open resistors (R255 and R256) in the DC Power supply the unit started working.

      It plays fine. But when it wants to go into standby mode, after 10 minutes, it starts cycling for a while. (see video on youtube)
      The noise from the speaker goes away and i'm pretty sure the interval changes and i only hear one relay clicking on the end (light still goes red/green)

      After cycling for like 30 secs to a minute it eventually goes into standby....
      08-31-2023, 04:15 AM
    • AleMonti
      LG 55EG910V - no power and no standby light
      by AleMonti
      Hi everyone,
      I'm trying to troubleshoot and repair this old LG OLED curved TV, model 55EG910V.
      I did some basic troubleshooting and reviewed most related posts here, but I wasn't able to isolate the issue.

      The TV shut itself off during playback and never came back to life - the standby light remains off. My dad claims that it has happened a few times in the past but the issue resolved itself after some time. Not this one.

      After checking the basics I did the following:
      • I measured all voltages and as expected the only active supply is the 3.5V standby. It
      ...
      11-04-2024, 05:02 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
    • Loading...
    • No more items.
    Working...