please help, friend, asu ROG G750JW REV. 2.1 lvds problem

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • fredyjbi
    Senior Member
    • Feb 2021
    • 144
    • malaysia
    #1

    please help, friend, asu ROG G750JW REV. 2.1 lvds problem

    asus board series g750jw rev 2.1
    the laptop turns on, the caplock lights up and works normally but the LCD doesn't display an image
    I have 2 units of this laptop, one of which has no display, so I've tried changing the flexible cable and LED and also the GPU card

    J4501
    pin list
    1 AC_BAT_INV 19v
    2 AC_BAT_INV 19v
    3 AC_BAT_INV 19v
    39 +LCD_POWER 0v
    40 +LCD_POWER 0v
    24 BL_EN 0v
    38 LCD_PWM 0v

    L4501 pin 1, 2 0v

    Q4502 pin list
    1,2,5,6 +LCD_POWR_S 3,3v
    4 +LCDPOWER 0v
    3 L_VDDEN_RR 0v

    Q4501
    1,4 gnd 0v
    5,6 L_VDDEN_P 3.3v
    3 L_VDDEN_RR 0v
    2 L_VDDEN 0v

    Q4503
    gate L_VDDEN_P 3.3v
    drain +LCD_POWER_R 3.3v
    source gnd 0v

    R4509 1 and 2 0v

    D4502
    1 LID_SW# 3.3v
    2 LCD_BACKOFF# 3.3v
    3 BL_EN_C 0v

    D4501
    1 LCD_BACKEN 0v
    2 BUF_PLT_RST# 3.3v
    3 BL_EN_C 0v

    all resistance is not short to ground
    thank you for your help friends
    Attached Files
    Last edited by fredyjbi; 04-10-2023, 10:44 PM.
    Tags: None
    • ktmmotocross
      Boardkiller
      • Feb 2014
      • 3571
      • slovakia
      #2
      Re: please help, friend, asu ROG G750JW REV. 2.1 lvds problem

      as u dont have PWM, BL_ON and +LCD_POWER

      it is not in error but it is not enabled. bad gpu, bad onboard ram, ....

      did u flash virgin bios?

        Comment

        • fredyjbi
          Senior Member
          • Feb 2021
          • 144
          • malaysia
          #3
          Re: please help, friend, asu ROG G750JW REV. 2.1 lvds problem

          Originally posted by ktmmotocross
          as u dont have PWM, BL_ON and +LCD_POWER

          it is not in error but it is not enabled. bad gpu, bad onboard ram, ....

          did u flash virgin bios?
          thank you sir for your explanation, I have flashed the bios and also replaced the vga card but it is still the same, I have 2 units one using 3d and one using a 2d vga card I tried to exchange it but the result is still the same

            Comment

            Previous template Next

            Related Topics

            Collapse
            • theone111
              Problem with LG Plasma 60PM6700 - Random power downs
              by theone111
              I have an LG Plasma TV 60PM6700 for the past ~12 years.

              In the last ~3-4 months I have been having some issues.
              1. Problem: It started with random picture disappearing (sound still worked).
                Frequency: Happened about once a week.
                Solution: Had to turn off TV wait a few seconds before turning it on again.
              2. Problem: Then it got worse and the TV started to shut down and when turning on the no picture just sound.
                Frequency: Happened about once a week.
                Solution: Had to turn off TV wait about 10-20 seconds and turn it on again to solve.
              3. Problem: TV shuts down
              ...
              1 Photo
              07-22-2024, 10:36 AM
            • Zeonalbasta
              Thinkpad X1 Carbon "LMQ-1MB 12298-2 48.4LY26.021" VCC3M problem
              by Zeonalbasta
              i have a problem with thinkpad X1 carbon gen 2 "LMQ-1MB 12298-2 48.4LY26.021"
              The laptop was turned off because the MOSFET was not transmitting voltage. After checking it turned out that the gate pin on the MOSFET was the problem, because it was producing an inappropriate voltage. and it was discovered that the problem was with the Think engine, so I decided to reprint each pin, and finally the mosfet could work properly. However, there is another problem, even though the voltage has been supplied to the laptop, it still won't turn on, there isn't even an LED indicator. After double...
              09-13-2024, 01:17 PM
            • arashmoayyedizadeh
              lenovo b590 lvds problem
              by arashmoayyedizadeh
              hello friends
              i had a lenovo b590 with no display
              i programmed the bios and now it has display on vga and hdmi but not on lvds
              lvds cable and led has changed but no difference
              backlight comes up but no data
              there is one beep at startup
              pch is my suspect but i cant confirm it
              any idea?
              thank you very much
              09-01-2022, 03:27 AM
            • Gibon378
              Problem with stopping audio and video for no reason
              by Gibon378
              PC Specs:
              • CPU: Ryzen 5 1600
              • GPU: GTX 1080 Palit JetStream
              • MOBO: ASRock ab350 PRO4
              • RAM: Crucial Ballistix Sport 2x8GB 3000MHz (XMP 2.0)
              • PSU: XFX 650W (don't remember what model)
              • OS SSD: ADATA SP920
              • OS: Windows 10 21H2


              Problem description:
              Hi. I have a problem that has been going on for some time (2-3 years). It's hard to explain what it really is. Sometimes, my computer stops playing music, stops videos (starts buffering on youtube), there is no sound in games and when I minimize the game window and return to the game there is a black screen with window borders...
              11-19-2022, 09:41 AM
            • perzyk23
              Lenovo T580 - LCD Panel problem - error 0288
              by perzyk23
              Good morning,
              I have a problem with Lenovo T580, which after error code 0288 suggests a problem with the display. I checked the display and it works on another laptop. I replaced the display cable with a new one. I programmed another BIOS (downloaded from this forum) and I still have the problem of a dead display - there is an image via HDMI, and the system does not detect the built-in LCD at all. The problem appears to be hardware. What can I check to confirm or disprove this? I found many threads on the Internet related to this problem 0288, but without specific solutions. Please advise....
              10-25-2024, 12:42 AM
            • Loading...
            • No more items.
            Working...