Led backlight universal board

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Hornnumb2
    Badcaps Veteran
    • Feb 2011
    • 210

    #1

    Led backlight universal board

    I ordered one of these off Aliexpress but haven't been able to get it to work correctly. I am feeding it with 24 volts from main board and it seems to be just passing the 24v to output. I am trying to replace some ccfl with led strips. Any ideas what I am doing wrong. I have tried this one. Ca-266. https://www.aliexpress.com/item/3297...6c4a25c43f8d-3
    Thanks Michael
  • R_J
    Badcaps Legend
    • Jun 2012
    • 9535
    • Canada

    #2
    Re: Led backlight universal board

    Likely the wrong led strips

    Comment

    • Hornnumb2
      Badcaps Veteran
      • Feb 2011
      • 210

      #3
      Re: Led backlight universal board

      Any idea what a 10 led strip should pull in amps?/

      Comment

      Related Topics

      Collapse

      • m1ch43lzm
        HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
        by m1ch43lzm
        Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
        Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
        05-12-2025, 08:37 PM
      • 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
      • C152Heavy
        Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board
        by C152Heavy
        Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board

        Summary for TL-DR readers:
        • Backlight is intermittent, may come on with TV boot or not. No flickering, never fails during TV on.
        • Have obtained Samsung schematic & service documents - Can upload if helpful.
        • Have read ALL applicable threads
        • C1818 and CP820 replaced as low hanging fruit
        • CN802 data taken for normal and failed BL operation. SUMMARY: Pin 2 - 5vDet = 3.52 @normal, 0.0 @BL fail. Pin 6 - EPWM = 1.631 @normal, 1.058 @BL fail.
        • VCC pin (18) of PFC...
        01-11-2023, 02:53 PM
      • howardc64
        A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
        by howardc64
        Problem

        This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
        08-04-2024, 10:36 PM
      • ermals
        Samsung UN55H8000AF - No Picture, Working Backlight, Replaced T-Con Board
        by ermals
        Hi all!
        I've recently run into an issue with my Samsung UN55H8000AF LED TV displaying no image. I've done quite a bit of research in terms of what could be wrong with it. Below are the steps I've taken prior to reaching out here for some assistance:

        1. I've tried replacing the T-Con board (BN95-01594A), twice and have still experienced the same issue with all the boards I've tested with.
        2. I've tried to remove one side of the ribbon cable that goes from the T-Con board to the panel and still not getting any image on left or right side.
        3. I've checked voltages...
        08-01-2022, 10:35 AM
      • Loading...
      • No more items.
      Working...