Author Topic: Screens Freeze  (Read 350 times)

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Offline TMC

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  • location: Illinois
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  • Unit(s): 698ci HD SI , 798ci HD SI
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Screens Freeze
« on: May 19, 2018, 06:10:53 AM »
I'm running two Humminbirds on my boat, a 698ci on the front and a 798ci at the driver's position. Both transducers are mounted on the transom.
I recently upgraded my motor to a Mercury 115HP XPS and now when I hit about 25 MPH both screens freeze. The controls are frozen as well. I have to power off with my main switch and restart them to get an image back. Any clues would be appreciated.


Offline rnvinc

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Re: Screens Freeze
« Reply #1 on: May 21, 2018, 06:51:49 PM »
I'm not sure what boat speed would have to do with any type of freezing issue  ...

Sounds like a possible low voltage problem  ...

Can you have the battery load tested  ...??

How are the units wired to power  ...??

Rickie

Offline TMC

  • Newbie
  • *
  • Joined: May 2018
  • location: Illinois
  • Posts: 2
  • Unit(s): 698ci HD SI , 798ci HD SI
  • Software: 7.680
  • Accessories: none
Re: Screens Freeze
« Reply #2 on: May 24, 2018, 05:49:06 AM »
Thanks,

I haven't had time to get back to this since my last trip but thought about connecting a DVM directly to the battery to watch the voltage level as I accelerated.

The units are wired through the main fuse block after the power switch. I'd like to keep them after that switch, otherwise I'll have to pull them off the mount to power cycle them if they freeze again.

I thought that someone might have had a similar occurrence and possible tried a filter capacitor or voltage regulator on the power leads.

Offline rnvinc

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  • Joined: Nov 2009
  • location: Western KY
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  • Unit(s): 1197c SI Combo, Onix 8ci SI Combo
  • Software: Dependent on whim
  • Accessories: AS GRHA, AS GPS HS, LowBird LSS 1 & 2
Re: Screens Freeze
« Reply #3 on: May 24, 2018, 04:37:57 PM »
Existing boat wiring is not recommended for powering electronics  ...

It's usually too small a wire Guage  ... With too many connections that can cause voltage drop  ... 

It is recommended to install dedicated 12-14 Guage wire direct to the battery with a fuse  ...

These units are very susceptible to issues with low or dirty power  ...

Rickie


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