HP w20 LCD Display Inverter, running out of options.

Collapse
X
Collapse
 
  • Page of 7
  • Time
  • Show
Clear All
new posts
Previous 1 2 3 4 5 6 7 template Next
  • deni-m
    New Member
    • Aug 2016
    • 2
    • macedonia
    #121
    Re: HP w20 LCD Display Inverter, running out of options.

    Originally posted by budm
    See picture for the B+ for the LED driver board.
    You still need to locate the BL_ON signal and the Dimming signal to control your LED backlights.
    Thanks for your post. Tomorrow I'm have free time to fix the screen.
    Just tell me is it necessary to remove the mosfet's?
    Isn't BRI mean brightness (dimming signal control),
    and ON/OFF its bl_on signal?
    Is it BRI first or second pin?

    Thanks again
    Attached Files

    if you find these attachements useful please consider making a small donation to the site

      Comment

      Previous 1 2 3 4 5 6 7 template Next

      Related Topics

      Collapse
      • x_orange90_x
        Vizio E55-E1 bad backlights or bad inverter?
        by x_orange90_x
        I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.

        I don't know how exactly to test the inverter itself. Is it...
        01-29-2025, 09:24 PM
      • keepread
        Dell monitor PSU vs Dell laptop PSU
        by keepread
        Hi there!
        Someone gave me their old monitor, it's Dell S2715ht.
        The owner was using it when his PSU began to smell and then to smoke. It literally began to melt. He turned the monitor off, pulled the PSU, and ditched it because it was smelly even after it cooled. So I got the monitor but not the plug.
        Now, I tried to bring the monitor back to life, by plugging one of my many Dell laptop PSUs. They are of the same 19.5V, and the wattage of the laptop PSU is higher than that which the monitor is rated for. Visually, the socket on the monitor seems compatible, and the plug plugs...
        10-30-2025, 04:45 PM
      • momaka
        HannStar Hanns-G HC194d LCD monitor repair
        by momaka
        Normally, I never post repairs this quick after I do them, because… I am usually very slow. But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
        03-15-2023, 10:17 PM
      • lostone
        Looking for help with a Viewsonic VP230mb where the backlight comes on only momentarily
        by lostone
        Hello, I came here after finding some similar questions asked on other monitors and hope someone here can help me get an ancient Viewsonic VP230mp (23" 4:3 LCD) back to working condition.

        First a little background, I have a background in computer and electrical engineering, and I'm smart enough to know I know nothing about LCD displays and how they work. For this topic I'm as green as they come.
        When the display is turned on the viewsonic logo displays in the uppper left for 2 seconds then the screen goes black, the power LED is green (on) and when a computer is connected...
        05-19-2024, 11:40 AM
      • wattage
        AOC AG493UCX 49-inch monitor - Firmware request
        by wattage
        Hello Badcaps Community,

        I purchased a preowned AOC monitor that is not working and out of warranty. It was sold as not working. I am looking for guidance on self-repair. In particular, I am after the firmware for the monitor. At the end, I have included monitor model information and links to pics and vids of the issue.

        The problem is that it will not display a picture on any of its inputs. And the on-screen menu does not appear. The power button works properly. It powers on with the remote as well. But the on-screen menu does not appear, even when not connected to any...
        07-13-2025, 04:41 PM
      • Loading...
      • No more items.
      Working...