Mac A1990 Screen

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • ian G
    New Member
    • Nov 2023
    • 7
    • UK
    #1

    Mac A1990 Screen

    Need some advise on an unknown history Mac 1990 that I have bought,

    Issues relate to what could be described as a water mark on some areas of the screen, This is only visible on a white background, Shows a blue type breakthrough, or patch on some areas.

    Using an external monitor the external monitor is clean (No issues)

    ? Is this a backlight issue (Reflective layers) or is it the main LCD that is the issue.

    I have noted the cost difference for just replacement layers ($10) against $400 for a LCD unit.

    I do have the capability to remove the screen (Full ESD mat and grounding strap will be used) along with an Air tool for removal.

    Just like to know anyones thought on this in, order to be prepared with the correct items before proceeding further,

    Regards Ian G
    Tags: None
    • ian G
      New Member
      • Nov 2023
      • 7
      • UK
      #2
      Re: Mac A1990 Screen

      I have also heated the screen to 40c using a hairdryer, No Change, put pressure on the edges of the screen (No change) applied a suction cup (1ins) to one area of the screen (No change)
      Regards Ian G

        Comment

        • PITERPENY
          Badcaps Veteran
          • Jul 2023
          • 455
          • Ukraine
          #3
          Re: Mac A1990 Screen

          You can’t fix this yourself if there is no installation to replace the conductive glue under the cable that is glued to the matrix. Over time, it happens that one contact on the cable comes off. in general, it’s not difficult to fix, but you’ll have to disassemble it, and I don’t recommend doing this without practice, since a microcrack will lead to complete loss of the matrix. and if you have practice, everything is very simple. I often encounter this problem.

            Comment

            • ian G
              New Member
              • Nov 2023
              • 7
              • UK
              #4
              Re: Mac A1990 Screen

              Many thanks for the information Piterpeny, stay strong most of the world supports you,
              Regards Ian G

                Comment

                • PITERPENY
                  Badcaps Veteran
                  • Jul 2023
                  • 455
                  • Ukraine
                  #5
                  Originally posted by ian g
                  re: Mac a1990 screen

                  many thanks for the information piterpeny, stay strong most of the world supports you,
                  regards ian g
                  tnx bro

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • Ryan.man
                      Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
                      by Ryan.man
                      Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

                      My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

                      This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
                      02-04-2025, 12:23 PM
                    • ahoonid
                      MacBook A1990 vertical stripes on external screen
                      by ahoonid
                      Hey everyone,

                      I bought a MacBook A1990 with no screen. I bought it knowing the motherboard was defective but wasn't sure what the problem was until I received it. It actually turns on but as you see from the attachment, it has vertical stripes, on an external screen!!

                      The board is neat. Not opened before for sure. Just a little dust, nothing more.

                      Recovery using wifi can be opened, as can also be seen in the photo but it doesn't go all the way through after connecting it to a wifi. It downloads the initial Recovery files but never completes the rest of the...
                      06-20-2025, 08:54 AM
                    • reformatt
                      Macbook Air M2 A2681 Kernel panics after screen replacement
                      by reformatt
                      Just had a customer bring in a M2 MBA A2681 that had had a screen replacement in April at another repairer. Since then, she has been getting intermittent kernel panics. It's an aftermarket screen, and of course it fails in diagnostics as the calibration hasn't been done. The error in the panic log is "No device added after powering on the rails".

                      It seems the original repairer has swapped the board and the screen to other MAC's, and said that it isn't a screen issue. From what I understand, by doing a quick search on Google, this is in fact a screen issue. The panic relates...
                      07-31-2025, 08:37 PM
                    • smic717394
                      iphone XS turns off when press on screen.
                      by smic717394
                      Hi,

                      I have a iphone XS that came in for a screen replacement, the screen was badly cracked, and inside missing scues, on the back of the screen still the blue protector, the screen was a LCD. So we replaced the screen and all good, installed the screen and we noticed that pressing the screen with a bit of force but not excessive, the phone dies. After plugging the charger it turns back on, but again if you press it it dies. I open the phone again, and I can't see anything major, with the phone open, if I press on the logic board, battery, charging board, or even putting pressure on...
                      07-25-2024, 10:16 AM
                    • Chrissygizmo
                      Samsung UE55JU6800K half screen dark
                      by Chrissygizmo
                      Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
                      I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same...
                      02-10-2025, 12:33 AM
                    • Loading...
                    • No more items.
                    Working...