Author Topic: 998 screen goes dark on boot up  (Read 955 times)

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Offline knorstu

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998 screen goes dark on boot up
« on: July 13, 2017, 11:09:25 AM »
Hi guys,

    Looked through other notes but thought I would ask anyway.

   I have a 998 that occasionally goes dark on boot up when the unit would normally start displaying the sonar screen. I have plenty of power as I was on a fly-in trip using a running 20HP motor connected to it's starting battery. On the dark screen I could hit the power button to get the shutdown screen. I could see it but was very very dark. Light setting was at the max.

   I would reboot. Sometimes it would work. Other times I would have to do it several times to get it working.

   Another person on our trip had the same model. He had the same issue with his once in a while.

   Any suggestions would be helpful. Thanks!


Offline rnvinc

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Re: 998 screen goes dark on boot up
« Reply #1 on: July 13, 2017, 06:14:07 PM »
Is the unit functional enough to get to the Restore Defaults under the Setup tab  ...??

Rickie

Offline knorstu

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Re: 998 screen goes dark on boot up
« Reply #2 on: July 14, 2017, 02:27:55 PM »
Yes, the unit works fine. It's just dark on boot up once in awhile.

Offline rnvinc

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Re: 998 screen goes dark on boot up
« Reply #3 on: July 14, 2017, 04:10:10 PM »
It sounds like the back light is failing  ...

Try Restore Defaults anyway when you can  ...

Rickie

Offline knorstu

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Re: 998 screen goes dark on boot up
« Reply #4 on: July 19, 2017, 05:51:48 PM »
Just found the unit quits pinging once the screen goes dark.

Offline rnvinc

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Re: 998 screen goes dark on boot up
« Reply #5 on: July 19, 2017, 07:49:30 PM »
Similar symptoms can be caused by a weak battery or insufficient wire gauge to the unit  ...

Is the unit wired directly to the battery with 14 gauge or heavier wire  ...??

Rickie

Offline knorstu

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Re: 998 screen goes dark on boot up
« Reply #6 on: July 20, 2017, 01:27:40 PM »
When I was in Canada, I had the Humminbird power cable directly connected to the battery.

Offline rnvinc

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Re: 998 screen goes dark on boot up
« Reply #7 on: July 20, 2017, 06:54:56 PM »
Here is the flat rate repair list and instructions  ...
https://www.humminbird.com/Category/Support/FAQ/RepairFees/
-----

There is this option also  ...
http://www.clearcastmarine.com

Rickie


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