Humminbird Side Imaging Forums

Side Imaging Forums => 997c SI, 998c SI & 999ci HD SI => Topic started by: knorstu on July 13, 2017, 02:09:25 PM

Title: 998 screen goes dark on boot up
Post by: knorstu on July 13, 2017, 02:09:25 PM: 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!
Title: Re: 998 screen goes dark on boot up
Post by: rnvinc on July 13, 2017, 09:14:07 PM: Is the unit functional enough to get to the Restore Defaults under the Setup tab ...??

Rickie
Title: Re: 998 screen goes dark on boot up
Post by: knorstu on July 14, 2017, 05:27:55 PM: Yes, the unit works fine. It's just dark on boot up once in awhile.
Title: Re: 998 screen goes dark on boot up
Post by: rnvinc on July 14, 2017, 07:10:10 PM: It sounds like the back light is failing ...

Try Restore Defaults anyway when you can ...

Rickie
Title: Re: 998 screen goes dark on boot up
Post by: knorstu on July 19, 2017, 08:51:48 PM: Just found the unit quits pinging once the screen goes dark.
Title: Re: 998 screen goes dark on boot up
Post by: rnvinc on July 19, 2017, 10:49:30 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
Title: Re: 998 screen goes dark on boot up
Post by: knorstu on July 20, 2017, 04:27:40 PM: When I was in Canada, I had the Humminbird power cable directly connected to the battery.
Title: Re: 998 screen goes dark on boot up
Post by: rnvinc on July 20, 2017, 09:54:56 PM: Here is the flat rate repair list and instructions ...
https://www.humminbird.com/Category/Support/FAQ/RepairFees/ (https://www.humminbird.com/Category/Support/FAQ/RepairFees/)
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There is this option also ...
http://www.clearcastmarine.com (http://www.clearcastmarine.com)

Rickie