MFC-L8900CDW Has Power Screen is Blank

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  • Aceman
    Junior Member
    • Jan 2025
    • 5

    #1

    [Misc] MFC-L8900CDW Has Power Screen is Blank

    Ok so we had a power outage and when the power came back on the Printer On/Off light is green but the screen is blank. The switch does not turn the machine on or off--i.e, it does not "toggle" on or off. I have tried all the suggestions of holding down the button with power on/off and had Brother Tech support go through all the same attempts. I connected it with USB my computer does not "see" the printer with the power on. I have on two occasions been able to somehow get it to "boot" and the screen appears. First time I pulled the plug out to move the machine back where it should be thinking it was fixed but when I plugged in same issue. The second time I got it to "boot" it wanted me to change the password tried to exit out of that and the screen went blank. Brother support referred me to a print repair place but this machine is about 5 years old so I don't think its worth paying to fix as they want $180 to diagnose and then the repair and parts would be extra.

    In the mean time I purchsed a barely used L8900 with the cartridges on FB Marketplace for $300 so I am back in business. But I figure if I can repair this machine I can either sell it ot donate it. So any ideas on what it can be? Any clue why it suddenly boots when maybe 20 efforts at trying the "hard boot" routine works? I was thinking maybe the "toggle" works randomly and when that happens I get it to boot.
  • tsbservice
    Field tech

    Site Contributor
    5,000+ Posts
    • May 2007
    • 7990

    #2
    99% it's main board when it's dead we replaced many. Strange enough yours can came to life on occasions
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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    • Aceman
      Junior Member
      • Jan 2025
      • 5

      #3
      Originally posted by tsbservice
      99% it's main board when it's dead we replaced many. Strange enough yours can came to life on occasions
      So not worth fixing then?

      Comment

      • dalewb74
        Service Manager

        Site Contributor
        1,000+ Posts
        • Feb 2018
        • 1137

        #4
        have you tried a new outlet or power cord?

        Comment

        • Aceman
          Junior Member
          • Jan 2025
          • 5

          #5
          Originally posted by dalewb74
          have you tried a new outlet or power cord?
          Yes tried different cord and outlet and all the online stuff suggested also went through Brother Tech Support on phone. Also, as mentioned above, I did get the screen to "boot" a few times so it's obviously not the power cord or outlet otherewise I'd get nothing ever, right?

          Comment

          • Aceman
            Junior Member
            • Jan 2025
            • 5

            #6
            Originally posted by tsbservice
            99% it's main board when it's dead we replaced many. Strange enough yours can came to life on occasions
            Can you link me to the part I need for this?

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            • sappa12
              Technician

              50+ Posts
              • Sep 2023
              • 55

              #7
              try to change round flat capacitor(0,33F-5,5V) on main board...this give you starting voltage when power on...had this few times

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