BenQ MX763 Projector

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  • ljintexas
    LJinTexas
    • Jan 2015
    • 669
    • USA
    #1

    BenQ MX763 Projector

    I inherited this projector from a friend..so it goes.
    It powers up and the "lamp" indicator comes on blinking red. I replaced the lamp, but I am still not getting lamp powered up..took it apart. basically it has three boards..a power supply board, a main board and a lamp driver board. I replaced several electrolytic caps and a power transistor that switches the power to the lamp driver board. Unit starts up, waits 20 seconds and then shifts fan speeds like the lamp has been turned on, but, no fire to the lamp! I am going to take it apart again and take pics..hard to troubleshoot hot as it has a dummy switch and the boards are stacked vertically using pins to connect them..Anyone have any experience with these?

    Thanks as always

    LJ
    Tags: None
    • ljintexas
      LJinTexas
      • Jan 2015
      • 669
      • USA
      #2
      Re: BenQ MX763 Projector

      Here are pics of the boards.
      Attached Files

        Comment

        • ljintexas
          LJinTexas
          • Jan 2015
          • 669
          • USA
          #3
          Re: BenQ MX763 Projector

          Anyone have any info on a service manual for this projector? I replaced the ballast and lamp..I still think there is something wrong on the power supply. It is very difficult to trouble shoot power on as the main board stacks on top of it.

          Thanks

            Comment

            • dragometin
              Member
              • Aug 2016
              • 20
              • France
              #4
              Re: BenQ MX763 Projector

              Check the color wheel flex cable

                Comment

                • petehall347
                  Badcaps Legend
                  • Jan 2015
                  • 4427
                  • United Kingdom
                  #5
                  Re: BenQ MX763 Projector

                  Originally posted by dragometin
                  Check the color wheel flex cable
                  wonder if he still has it as thread started 7 years ago

                    Comment

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