Wierd Linc Screen and Stereo issues

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  • Kuhl101
    • Jun 2013
    • 18

    • Michigan


    #1

    Wierd Linc Screen and Stereo issues

    Just piced up a 2021 G23 and we are having some wierd issues with the stereo and Linc Screen. Issue has occured 3 times in a row now and not sure what the fix is.

    Issue occurs when at idle (6-700rmp) while filling or emptying ballast. There will be a "pop" or "click" then the stereo shuts down and is no longer detected. No lights or power to head unit either. Once this happens anything else running no longer works. Courtesy lights shut off, heater shuts down, ballast snesors loos their signal and the last time the ballast pumps stopped working. A manual push of the dran/fill button on the screen would produce a "click" noise and open the vavles on the thru hull but pumps would not spin...

    Most times a simple battery cycle with the perko swotch got things working temporarily. Last time after the perko cycle the Linc screen did not power up, I had to diconnect batteries for 10min and reconnect them. Then the screen booted up and I could again turn on pumps to drain.

    After the original issue i thought it might be low voltage since the batteries were original to the boat so I replaced them. I also verified that the connections were very tight at both batteries and the ground terminal in the battery tray under the observer seat near the glove box. There is also no visible corrosion at any of these locations. I did note that the reported voltage in the screen was 14.1-14.5V while surfing, and I believe at idle too but don't remember for sure.

    We have had the boat out to just cruise up the lake or idle out to watch fireworks. No issues with lights, heater stereo running. Basically everything but the ballast pumps.

    The dealer I bought the boat from, while helpful on the phone, is 6hrs away. Any help is apprciated. Ballast not draining and needing to get on a lift is not a fun place to be!
  • jpwhit
    Senior Member of PLANETNAUTIQUE
    • Aug 2016
    • 673

    • Cary, NC

    • 1998 Ski Nautique 2012 Nautique 200 2014 MasterCraft X25 . 2019 MasterCraft ProStar

    #2
    Yeah, that’s weird. This is probably a case where in-person diagnoses is required when the problem is happening.

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    • Kuhl101
      • Jun 2013
      • 18

      • Michigan


      #3
      I little update....

      I replacet th batteries with new. Both test to 12.8 V on multimeter and record similar voltage in Linc screen.

      I put a wrench on all of the battery terminals and the ground bus bar both near the battery under observer seat and directly under the dash. They we all snug and couldnt' really make any tighter. I will say the ones under the dash/linc screen were all able to get another 1/4 to 1/2 turn. I'm not sure if that would be enough to casue an issue. I went into the settings menus and saw no faults or overcurrent notices. I cycled the bilge pumps and looked for over current ans saw nothing. Since it was out of the water I only ran them for a few seconds.

      I cracked the belly pump (the easy one) to look at the impellor and see if there was anything in there that might be jammnig things up but nothing.

      I did notice the bilge sensors were reporting 0.66V (5%) Belly, 0.537 (12%) Port, 0.527V (11%) Stbd. Guessing this is due to the fact that the system shut down while in process and they possible need to be reset/relearned?

      Next step would be to verify the other pumps were clear with good impellers, didn't have time or the best tool to work upside down with me.

      Any other ideas? Could one of the pumps be going bad and eventually draw too much current? Is there a way to test the PDM to see if that is bad?

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