LG TV 49LW5700 does not power no Standby Voltage(PSU EAX62865401)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • nomoresonys
    Badcaps Legend
    • Jan 2013
    • 12196
    • U.S.

    #41
    Re: LG TV 49LW5700 does not power no Standby Voltage(PSU EAX62865401)

    Glad to hear it.

    Comment

    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12196
      • U.S.

      #42
      Re: LG TV 49LW5700 does not power no Standby Voltage(PSU EAX62865401)

      I think a quiet case fan, maybe installed on the back cover to let it blow fresh air right over the heatsink of the bga would help a lot and make it last a lot longer, prolly cut out the cover to accommodate the fan and use some foam rubber, sponge or such to damper any potential vibrations.
      Last edited by nomoresonys; 03-13-2023, 05:24 AM.

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12196
        • U.S.

        #43
        Re: LG TV 49LW5700 does not power no Standby Voltage(PSU EAX62865401)

        Just something simple like this mod, fan blowing right on it, bound to keep it running cooler, looks like a must have for those type av deals with that poor design, such as he has: https://www.youtube.com/watch?v=AyzbIaVrWA8
        Last edited by nomoresonys; 03-13-2023, 06:18 AM.

        Comment

        • GMAN6325
          Gman6325
          • Mar 2023
          • 16
          • USA

          #44
          Re: LG TV 49LW5700 does not power no Standby Voltage(PSU EAX62865401)

          Interesting.

          Comment

          Related Topics

          Collapse

          • GLISIT
            Asus Probook P5440UF-XB74 power issue
            by GLISIT
            Hi all,

            TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!


            I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!

            A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about...
            01-16-2025, 02:29 PM
          • sam_sam_sam
            Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply
            by sam_sam_sam
            I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump

            One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
            03-31-2024, 02:12 PM
          • SkishyIshy
            Sony Bravia XBR-65x900f: No Power, No Standby-light - however 3.3v STBY is present
            by SkishyIshy
            Hey All,

            I have a Sony 65x900f that I purchased cheap because of a no-power issue.
            I assumed that because there is no standby light visible, it would be an easy fix - however upon opening up of the unit I can confirm that the 3v3 standby voltage is making it's way from the power supply to the main board. I'm a little confused as to why there is no standby light.

            I am firstly wondering if anyone has this model of TV, or has worked on one and can give me some insight. I have tried to find a service manual for this model, to no avail - and would really appreciate...
            03-17-2021, 11:44 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
          • noinimod
            Sony 55X900E no standby light, no power. Replaced mainboard already
            by noinimod
            No standby red light, nothing
            This Sony has a separate AC->DC power adapter supplying 19.5V to the TV power board (JK3)



            Disconnected JK3 power board from main board, checked voltages on all the pin outs

            At a few pins I can see the power supply providing 19.5V to the main board



            Based on the service manual triage.. it seems to be pointing towards the power board (JK3) being the most possible culprit


            LED light turns on when I disconnect LED driver board ribbon from mainboard (so i thought it is the mainboard,...
            12-22-2021, 12:58 AM
          • Loading...
          • No more items.
          Working...