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Dec 30th, 2023
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 Help with Voltage and HDS Touch Unit
#11741630
07/25/16 09:28 PM
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Joined: Jul 2013
Posts: 737
TallBaldCypress
OP
Pro Angler
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OP
Pro Angler
Joined: Jul 2013
Posts: 737 |
Hey Gurus... need some advice.
I'm reading 12.9v at my X2 Power Series 31 AGM battery. I'm reading the same voltage at the power cord to my main unit. When I turn on the unit the voltage displayed is only 10v. When I power the 2nd unit on the screens start flickering and eventually powers off.
What is my issue?
Thanks in advance.
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Re: Help with Voltage and HDS Touch Unit
[Re: TallBaldCypress]
#11741635
07/25/16 09:32 PM
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Joined: Jun 2008
Posts: 5,435
Mike_Soriano
TFF Celebrity
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TFF Celebrity
Joined: Jun 2008
Posts: 5,435 |
Is one wired in series off of the other? Could be too much voltage drop across the first one.
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Re: Help with Voltage and HDS Touch Unit
[Re: TallBaldCypress]
#11741698
07/25/16 10:11 PM
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Joined: Feb 2008
Posts: 6,776
RiveraTackleCo.
TFF Celebrity
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TFF Celebrity
Joined: Feb 2008
Posts: 6,776 |
Does it show 12.9V at the battery when you turn on the first unit? If your voltage drops at the battery when you turn on the first graph you could have a bad battery....
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Re: Help with Voltage and HDS Touch Unit
[Re: TallBaldCypress]
#11741806
07/25/16 11:13 PM
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Joined: Mar 2009
Posts: 825
skins84
Pro Angler
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Pro Angler
Joined: Mar 2009
Posts: 825 |
What size wire are you using? I finally had enough of the low voltage issues to my graphs and ran a dedicated 12ga power supply from my battery to the console and the front of the boat and have had no issues since. I'm assuming your battery is good, but I'd check it first.
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Re: Help with Voltage and HDS Touch Unit
[Re: TallBaldCypress]
#11741816
07/25/16 11:22 PM
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Joined: Sep 2009
Posts: 1,467
Chris Coufal
Extreme Angler
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Extreme Angler
Joined: Sep 2009
Posts: 1,467 |
Make sure you have a dedicated source off the battery or off the block to each unit. If you power them off an accessory wire it is too much draw and this will happen. With my 3 units they would reboot when I would crank the boat until I ran dedicated wires.
Also do not trust the voltage on the graph for the battery voltage (this differs from supply voltage). There is a huge thread on BBC about this. Depending where your power wire is at, it could be drawing voltage off the NMEA backbone, the accessory switch or a number of other things giving you a false supply reading on the HDS readout.
Last edited by Chris Coufal; 07/25/16 11:34 PM.
-Chris-
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Re: Help with Voltage and HDS Touch Unit
[Re: Chris Coufal]
#11741896
07/26/16 12:20 AM
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Joined: Jul 2013
Posts: 737
TallBaldCypress
OP
Pro Angler
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OP
Pro Angler
Joined: Jul 2013
Posts: 737 |
Make sure you have a dedicated source off the battery or off the block to each unit. If you power them off an accessory wire it is too much draw and this will happen. With my 3 units they would reboot when I would crank the boat until I ran dedicated wires.
Also do not trust the voltage on the graph for the battery voltage (this differs from supply voltage). There is a huge thread on BBC about this. Depending where your power wire is at, it could be drawing voltage off the NMEA backbone, the accessory switch or a number of other things giving you a false supply reading on the HDS readout. I have 3 units wired to the accessory switch if I'm not mistaken. At least 2 for sure. After your post and researching I'm pretty sure I need to get straight to the battery.
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Re: Help with Voltage and HDS Touch Unit
[Re: TallBaldCypress]
#11741910
07/26/16 12:26 AM
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Joined: Sep 2009
Posts: 1,467
Chris Coufal
Extreme Angler
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Extreme Angler
Joined: Sep 2009
Posts: 1,467 |
I bet that's your issue. Also if you have your units wired to a switch like that, always take the time to power off each unit. Do not just kill them with a mater switch.......it makes them do all sorts of crazy stuff that usually ends up requiring you to send them in for repair/replacement.
-Chris-
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