PN50C490B3D No power

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • crdz66
    Badcaps Veteran
    • Nov 2012
    • 242
    • USA
    #1

    PN50C490B3D No power

    Hello everyone.

    I need from you help with this plasma tv.
    I bought this tv couple days ago and the symptoms was turn on and off couple times until stop.
    Everything looks good on power supply (capacitors, nothing looks like burning)
    My first step was check the standby voltage and I get 5.12volts. After this I noticed that I don't have enough voltage on ps-on. .168volts.
    So, I proceed to disconnect the xmain board and realize the tv stop turn on and off several times.
    I proceed to replace xmain board and now, I still have standby voltage, no voltage on ps-on and the logical control board no turn on that green light.

    I did the process turn on without main board but the tv doesn't turn on
    I'm really stuck on this.
    Any Ideas???
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • pajdek
      Lenovo Y700-17ISK turn on and off
      by pajdek
      Hello, i have some issues with my laptop Lenovo Y700-17ISK (motherboard BY511 NM-A541), it started when i turn on the laptop, but the lcd wont turn on, i then connected it via hdmi to tv and screen was ok. So i thought maybe lcd stripe is faulty, i removed the bottom cover, disconnected main battery, reset the cmos by disconnecting battery for 1 min, then slighty move the lcd stripe. Conncted power supply and tuned on my laptop, the lcd turn on, it started to load os, then it turn off, after a second it turn on, then after like 3 seconds turn off again, and so on. Removed power supply, waited...
      09-20-2023, 02:49 AM
    • RdeveLabs
      MSI GF63 THIN 11UCX (MS-16R6) LAPTOP WON'T TURN ON AFTER RESTARTING
      by RdeveLabs
      To all the members here...

      Let me tell you a little bit about what happened to my laptop (MSI GF63 THIN 11UCX model: MS-16R6) that “maybe” you know how to solve this problem.

      So before this problem happened, my laptop was running smoothly. When I wanted to restart my laptop, it looked fine at first. But after I waited for this restart process to take a long time, until finally I panicked (because the restart process did not finish plus the laptop screen only showed a black screen), I immediately pressed and held the power button to force the laptop to turn off. But...
      05-05-2025, 04:59 AM
    • robante15
      Acer Aspire 4520 won't turn on after reboot
      by robante15
      Hello, I have an Acer Aspire 4520 from a couple of decades ago and I want to repair it solely for nostalgia.

      It happens that when I turn it on after having been disconnected for a long time, it turns on without problems, it tells me that the BIOS has been reset and that it will load the factory settings, if I tell it to continue, the computer turns on and everything works fine.

      The moment I turn it off and want to turn it back on a second time, or restart it and try to start it again, it no longer gives an image, and it no longer responds.

      If I remove the...
      04-06-2024, 06:50 PM
    • masoksian
      Dell latitude e7470 not turn on .power buton on off and Run Power problem
      by masoksian
      Hi everyone,

      I am dealing with the problem of turning on and off my Dell e7470 notebook.

      The battery charge light is solid white, I press the button, the power indicator and the light on the button are solid for 1-2 seconds and immediately turn off.

      The system does not turn on, there is no post.

      I removed the RAMs and changed them, changed the battery, RTC battery, AC adapter, removed them and waited, tried again, it does not turn on.
      The problem continues in the same way.
      I tried to turn on the Fn key, nothing came to the screen....
      02-15-2025, 12:08 PM
    • dqtech
      lenovo x240 nm-a091 wont turn on
      by dqtech
      i got this laptop with no power issue....i flashed the bios and laptop can turn on and use normally....but when i shut it down and rest for few minute (2-3 minutes), it wont turn on....i have to flash bios again...any idea what is the problem?...when i shutdown and suddenly press power button to turn on, it will turn on normally....problem happen when i rest the laptop 2-3 minutes after shutdown, it will not turn on....i need to flash bios again
      board number VIUX1 NM-A091 REV:1.0...
      02-07-2024, 01:57 AM
    • Loading...
    • No more items.
    Working...