Acer Aspire 1360 backlight dies, resets by pulling the plug.

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  • e5frog
    New Member
    • Jul 2012
    • 7
    • Sweden
    #1

    Acer Aspire 1360 backlight dies, resets by pulling the plug.

    I have been trying to find the error with my wife's Acer Aspire 1360.
    Laptop can be turned on for hours (sometimes just minutes) and then suddenly the backlight dies, screen still visible there in the darkness.

    To solve the problem temporarily I can reseat the inverter plug from the motherboard, a 2x15 pin connector with black, red and green wires (very thin). Not all places are used in the connector, some are empty.

    I bought another inverter, including the wire, that didn't solve the problem. I have tried hooking up a CCFL from another screen, same behavior. So neither the tube nor the inverter seems to be the problem. Possibly the newly bought inverter had the exact same problem.
    There is no flicker at all, it just dies and only way to get it going again is to either pop and plug the inverter connector (either end works but the one one the motherboard is easiest to reach) or restart the computer.

    Is it likely it's caused by software? I have tried shutting off the dim LCD while running from battery. I have the same troubles weather running from battery, running with battery and PSU or just PSU without battery hooked up.
    There are no later BIOS updates AFAIK.

    Does anyone have any ideas what else to check or measure?
    Can I hook up the inverter on my lab workbench without the computer, any idea how?

    Do I have to disassemble the laptop completely to check it?

    Knocking on strategical places or the whole computer has no effect, either way, it doesn't cause the light to go off nor on.

    I was considering an LED upgrade but it's a lot of money to spend on this old computer. Maybe a LED-mod a'la Ben Heck is a possibility...

    Inverter is marked V0210713104 A53 S127177 19.21064.001 Rev.1B , it has seven LEDs that indicate network, it's on, sleep mode, hdd, battery, caps lock and NumLk. All these LEDs seem to work fine during the blackouts.

    Are we perhaps in search for a breaking electrolytic cap? :-(
    I was hoping I wouldn't have to disassemble it completely...
    Tags: None
    • e5frog
      New Member
      • Jul 2012
      • 7
      • Sweden
      #2
      Re: Acer Aspire 1360 backlight dies, resets by pulling the plug.

      While going over all combinations again the backlight started acting up a lot, testing with other used stuff is of course a gamble but the spare CCFL seemed to work fine. When swapping back to the one in the screen it even flickered some, one side dominated at times.

      So I decided to rip the LCD apart and replace the tube.

      When finally reaching it beneath layers of tape, metal and screws I accidentally pulled the pink wire from the tube, wire looked all black...

      So, after removing it completely (more tape glue) I just cleaned the wire and soldered it back on the tube, has been running fine for about half an hour now so I'll put it back together and hope that was it for now. Let the wife enjoy the freedom of the new battery. Perhaps I should re-solder the white wire as well - now that I have it all apart...

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Acer Aspire 1360 backlight dies, resets by pulling the plug.

          Burnt wires on CCFL are very common failure. I would check the white wire also.
          http://s807.photobucket.com/albums/y...klight%20lamp/
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • e5frog
              New Member
              • Jul 2012
              • 7
              • Sweden
              #4
              Re: Acer Aspire 1360 backlight dies, resets by pulling the plug.

              Just got it back together, if I could only fix this keyboard as well it would be back to near perfect...

              Ouch, those tubes looked really bad.

              Not much burnt on my tube, I guess the new solder joint should hold for a few years more now, have to send that inverter back that I don't need anymore...

              Maybe a LED-strip isn't such a bad idea.

                Comment

                • e5frog
                  New Member
                  • Jul 2012
                  • 7
                  • Sweden
                  #5
                  Re: Acer Aspire 1360 backlight dies, resets by pulling the plug.

                  Still running fine, I consider the problem solved.

                  It's not very easy to get to the tube, I just cut the different kinds of tape and made a big effort trying to remember where the tree different kinds of screws went. I recommend keeping the bending to a minimum.
                  There's a folded piece of metal that covers the tube, inside that goes the big plastic sheet that spreads the light - it was tricky getting it back in there without disassembling the entire thing.

                  Perhaps it really IS easier to disassemble the entire LCD panel instead of trying to remove just the most necessary parts.

                  Recommend rubber gloves and a really clean space, you don't want to get smudges on any internal parts of the screen.

                    Comment

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