No power, sony KV-SW292M80

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • rawan
    Senior Member
    • Oct 2009
    • 57
    #1

    No power, sony KV-SW292M80

    Hi
    I have this tv with no power, no led glow on front panel, i checked low voltages 3.3v and 1.8 v and its ok.
    I think tv is in protection mode but there is no any led glow on front panel , no HV ,
    I have schematics but still confused form where to start.Both mosfet in power supply and h-output is ok.
    Any help please.
    Thanks
    Manoj
    Tags: None
    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6643
      • Wales
      #2
      Re: No power, sony KV-SW292M80

      Some sharp picture would help and be a good starting point for others to offer assistance.
      Willing to help but I'm no expert.

        Comment

        • Andrew F. Ali
          Badcaps Legend
          • Jan 2014
          • 2450
          • Trinidad & Tobago
          #3
          Re: No power, sony KV-SW292M80

          Do you have B+ going to the Flyback Transformer?? What about Horiz Osc, is that OK? LV Regulator OK?

            Comment

            Previous template Next

            Related Topics

            Collapse
            • 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
            • PantherDave
              Microsoft Surface Pro (5th gen) model 1796 - no power
              by PantherDave
              Hi all!

              I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅

              I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
              https://www.badcaps.net/forum/troubl...-hardware-devi...
              05-29-2024, 02:01 PM
            • 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
            • PopsCaps
              Sony Bravia KDL-40V2500 that will not power on
              by PopsCaps
              I have a Sony Bravia KDL-40V2500 that will not power on. The indicator flashes red 3 times.
              I do not hear any sound and I cannot see any backlight.
              I have tried disconnecting every cable on each board one at a time to see if anything changes.
              The only change is when I disconnect AC-DET cable on the Power Supply board or on the other end if I unplug the CN7009 connection on the B-Board and try to power on the TV the indicator will stay on solid green until I power off.
              My friend ordered another used power supply board but it is also doing the red indicator flash 3 times...
              03-25-2025, 11:23 AM
            • 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
            • Loading...
            • No more items.
            Working...