Philips 42inch backlight

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • PL519
    Tube lover
    • Jul 2013
    • 26
    • Germany

    #1

    Philips 42inch backlight

    Hi guys,
    i am referring to this thread : https://www.badcaps.net/forum/showth...t=18596&page=2. I have exchange two or more CCFL´s from an AUO 42 inch. So far i have managed to remove the upper metal frame of the display with the display laying on it´s back on my workbench and the lcd glass facing upwards. Please, can anybody describe the procedure to remove the glass safely without breaking it and remove it back after changing the CCFL´s? I had success with max. 20''ers but i´m a bit afraid with this dimension. Any help is pretty much appreciated!
    TIA,
    PL519
  • attainteddragon
    Badcaps Veteran
    • Apr 2013
    • 764
    • australia

    #2
    Re: Philips 42inch backlight

    remove the steel bezel,
    undo the ribbon cables from the t-con,
    then you can unclip the plastic frame that the lcd sits on and lift it as one,
    remove the diffuser plates and then you will have access to your globes.
    WHY CAN'T PHILIPS USE PHILLIPS HEAD SCREWS?

    Comment

    • PL519
      Tube lover
      • Jul 2013
      • 26
      • Germany

      #3
      Re: Philips 42inch backlight

      Hi,
      thanks a lot for the advice. I finally did it your way! Those things are so damn fragile, it really caused me headaches and i was totally sweaty...! Nice experience though!
      Thanks again,
      PL519

      Comment

      • attainteddragon
        Badcaps Veteran
        • Apr 2013
        • 764
        • australia

        #4
        Re: Philips 42inch backlight

        from now you will be able to do it with your eyes closed!
        WHY CAN'T PHILIPS USE PHILLIPS HEAD SCREWS?

        Comment

        Related Topics

        Collapse

        • DanPoka
          Guide me through repairing a Dell p2210f LCD ccfl backlight monitor
          by DanPoka
          I bought this p2210f dell monitor to fix. Schematic is the same as p2210.
          Behaviour is that monitors comes on but then backlight switches off almost instantly. If I look with flashlight I can still find the "No signal message". So definitely a backlight issue. Trying to advance the issue I proved that the protection circuit is switching off the backlight by shorting out C3 and resistor to disable the INL chip then re enable by removing the short.
          This is where it gets interesting. When I disassembled the monitor to solder leads on c3 capacitor I noticed the backlight flickered...
          02-15-2025, 05:05 AM
        • chestercc
          Philips TV Backlight Repair
          by chestercc
          So i'm trying to replace the LED's in a Philips TV. It's 42" with a 715g7262-p01-000-0010 backlight driver board based around an O2 Micro OZ9902CGN.

          My issue is when I replace all the LED's on one board with the new 3V 300ma ones they immediately burn out when the set is powered again. I previously tried the same thing with 6V LED's and the backlight flickered for a bit but wouldn't start.

          The original LED's which I removed which are still working start to melt and burn when given more than 3V on DCPS so I know they shouldn't be higher voltage ones.

          ...
          11-18-2022, 01:15 PM
        • ohren
          Trying to control Philips backlight manually with PWM — brightness increases with frequency...?
          by ohren
          I raised the question of whether PWM on the power board "dim" pin would be a reasonable assumption for controlling the backlight of a Philips TV (55put6101/12): https://www.badcaps.net/forum/troubl...d-tv-backlight. I didn't receive any insights there so I went ahead and tried it.

          The setup is basically:

          Rpi3 hardware PWM → 220 Ohm → NPN transistor → dim pin

          Transistor is switching the 3.5 V supply on the power board....
          12-05-2024, 11:10 AM
        • Document Archive
          Design of CCFL Backlight Inverters with Frame & Bar Cores
          by Document Archive
          Design of CCFL Backlight Inverters with Frame & Bar Cores

          Summary

          Portable devices, such as notebook computers and personal digital assistants are developed rapidly nowadays, which places an increasing demand on display technology. The LCD with cold cathode fluorescent back lighting satisfies the requirements on display performance, size and efficiency.

          The backlight inverter plays a crucial role in supplying the power to the lamps of these flat-panel displays.

          The frame and bar ferrite cores, described in this brochure, are especially designed...
          10-07-2024, 04:26 AM
        • triplefour
          UN65TU700DF picture and sound but no backlight. BL tests ok but repl. PSU didnt fix!
          by triplefour
          this tv is throwing me for a loop. do samsung tvs no longer have the backlight self test feature built into the power supply?
          i tested the backlight with my LED tester and it lights up both strips. one of them reads 100v and the other reads 63.7v.
          unplugged mainboard from power supply but left backlight plugged in, and then plugged psu wall power in. expected to see backlights light up but see nothing.
          according to how ive diagnosed in the past, this would almost always be a bad power supply. replacement power supply was cheap like 20$ from ebay. but still i get not even...
          09-13-2023, 10:43 PM
        • Loading...
        • No more items.
        Working...