samsung 40f5000 voltage very high

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • hispeck
    Badcaps Veteran
    • Aug 2015
    • 258
    • nigeria
    #1

    samsung 40f5000 voltage very high

    Hello i have a samsung 40f5000 led tv, when i opened to the back light i found some burnt led and the white plastic all burnt, so am asking because when i test the back light voltage i got 332v and the back light is haven 91 leds, i stand to be corrected , 3v x 91 =273v , but someone said the voltage is meant to be high without load. i need help
    Attached Files
    Tags: None
    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6643
      • Wales
      #2
      Re: samsung 40f5000 voltage very high

      It's not unusual for the led voltage to be higher when the leds are open circuit and the set is powered up. The voltage often initially peaks and then drops back.
      Willing to help but I'm no expert.

        Comment

        Previous template Next

        Related Topics

        Collapse
        • karatzdi
          Denon AVR 1908, High pitch noise on Surround back Left channel after long overhaul
          by karatzdi
          Hello,

          I know some might say... just buy another one. Sell it as parts..!

          So had this AMP for quite some time. Recently I saw light smoke coming out of the AMP. Had my fire extinguisher close by. Just kidding. Turned immediately all devices off from mains.
          Let things cool a bit, and opened up the amp device. I clearly saw on the main board which hosts the 5X amp (5.1), 3 10 ohms 1W resistors had their leads looking black, while the rest of the remaining 2 x 10 ohms were brownish as being installed from factory.

          Spent some time downloading the Service...
          06-11-2024, 08:38 AM
        • Document Archive
          Samsung Galaxy Book 2 Notebook Specification for Upgrade or Repair
          by Document Archive
          This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
          09-07-2024, 05:50 AM
        • DynaxSC
          Extreme High Current & Low Voltage Short Killer ??
          by DynaxSC
          Hi Folks

          I'm looking for a extreme high current short killer solution for a reasonable cost.

          I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
          After taking off the socket, the shorts dissappear again.
          The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...
          10-15-2024, 10:13 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...
          ORIGINAL POWER SUPPLY BOARD
          7 Photos
          11-22-2024, 01:46 PM
        • tvguy12012012120
          Zombie Samsung UN55NU6900F dead / no standby voltage - randomly came to life after hours of troubleshooting then died
          by tvguy12012012120
          This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.

          Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today....
          02-07-2025, 05:13 PM
        • Loading...
        • No more items.
        Working...