Dell 3008WFP backlight flickering

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • leapius
    Senior Member
    • Aug 2012
    • 60
    • uk
    #1

    Dell 3008WFP backlight flickering

    I have an issue with the backlight randomly flickering bright and then back to normal. There are 18 long CCFL bulbs powered by 9 inverters. The issue will probably be either a bulb or the inverter board.

    In the first instance, I wanted to connect an existing smaller CCFL dual-bulb assembly to each of the inverters in turn whilst leaving the other 8 intact. My idea here was to see if one of the bulb sets is creating the issue.

    My question is this:

    The bulbs I have to test with are from a 19" display so are smaller than the ones in this 30" display. Can I attach it to the inverter without harming it? Does a CCFL bulb have to match the inverter or does it just take what power it needs?

    Many thanks
    Tags: None
    • Rtech
      Badcaps Legend
      • Jul 2010
      • 1095
      #2
      Re: Dell 3008WFP backlight flickering

      You normally can use a smaller one with no problem.

        Comment

        Previous template Next

        Related Topics

        Collapse
        • Bowline
          Dell E6400 PT434 type Battery Charging Stuck at 1%. Battery Pinouts?
          by Bowline
          My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?

          Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?

          My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
          The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
          I have tried multiple different Dell power adapters. My Dell...
          06-11-2025, 10:13 AM
        • master3112
          Dell Inspiron 5590 Board 18778-1 no charging, charging not possible
          by master3112
          I would like to share my experience about charging issues with Dell power supplies with the tech community. I am working on a Dell Inspiron 5590, Mainboard 18778-1 with charging problems. The device can be switched on and works so far, only the message appears at startup:

          Alert! The AC power adapter wattage and Type cannot be determined. The battery may not change. The System will adjust the performace to match the power available.

          The power supply unit is not recognized in the Bios and the charging process is set to "idle". I use original Dell battery, type...
          07-29-2025, 01:55 PM
        • 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
        • repair-it
          TOSHIBA DLP 52HM95 How to reset timer module on bulb
          by repair-it
          I replaced the bulb only on my Toshiba DLP The bulb is a TB-25. This is the first time I've done a bulb only replacement. Supposedly there is a timer module that needs to be re-calibrated or reset. I don't know where the module is located. I see some vendors selling the bulb with the housing stating module included which leads me to think the module is located inside the enclosure the bulb mounts in, but I didn't see it. Maybe it's inside the plug attached to the bulb?

          Anyway - I am seeking information on how to reset this so called module so that the lamp will operate. Apparently...
          10-11-2023, 07:18 PM
        • F R 2568
          Dell Latitude 5420 does not start (no post) need help to find the reason why
          by F R 2568
          Hello all,

          this is my first post, so if I make mistakes please do not hesitate to point them out, thank you in advance.

          I got a Dell Latitude 5420 (Service Tag: 7RFM6D3, Motherboard: GDF40 LA-491P Rev.: 2.0 (A01)) which does not start and I want to repair it. These are the symptoms:

          If the laptop is only connected to the AC adapter (battery removed):

          When I press the power button, the keyboard backlight and the display backlight are turning on. Caps key light is lightning, but key does not respond to pressing it.

          The power/battery...
          01-08-2025, 05:45 AM
        • Loading...
        • No more items.
        Working...