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Old 10-09-2011, 11:22 AM
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Default Lowrance HDS7 "Power Up Issues"

Greetings, I've had a HDS 7 for less than a year and have really enjoyed the unit however, I'm starting to experience sporadic problems when I try to power on the unit. Sometimes when I hit the power button the units display goes "gray" instead of going directly to the lowrance power up display. I have to continue to turn the unit on and off until I get it to roll over. Has anybody had similar issues with their units? I just backed up all my waypoints with a SD card and was getting ready to send it back. T.
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Old 10-09-2011, 05:01 PM
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Aw yes, LOWrance "glitches" that I so fondly speak of often.

I would update software.
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Old 10-10-2011, 06:11 AM
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Sometimes it's as simple as having accidentally selected night mode or reduced brightness while shutting down.
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Old 10-12-2011, 03:01 PM
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Watch what you wish for.....I was putt putting along in Chatham Inlet yesterday and my screen just slowly started to go black......over about a 30 second period of time.

I tried rebooting....no soap....tried agin....same story. As fate would have it, the sun shone onto the display and I was thinking "now I'kk see nothing" but not true......you could see the dialog bozes and text etc as though looking at an Amazon Kindle, a display with no lighting at all. I looked at the dialog box that comes up if you "short push" the Light button and saw that the brightness setting had decided itself to be set to "1". Since I could read it in the sunlight, I jacked it up to 10 and I was in business again. Sent a note to Lowrance tech support today. They said they've never heard of this problem.

The only odd circumstance I can recall is that when I started the engine, I got a low voltage alert on the HDS (<11 volts). I'm vaguely suspecting that as the culprit.
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Old 10-12-2011, 06:31 PM
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I was having strange issues initially when I first got my unit. Finally figured out I had low voltage to the helm area which feeds the unit. Problem was bad Regulator/Rectifier on Starboard engine which is what fed the helm.
Motor fixed and back in business. As a result, I turned on the Voltage Overlay to monitor and surprisingly, the voltage is much less at the unit and helm that in the back of the boat, so found a weak and corroded 40 amp breaker. Replaced and now voltage is less than .4 volts difference between the helm and batteries at back, so problem resolved.
Check your voltage up front. Turn on the data overlay to monitor the voltage on the unit to see if it is getting down to the 11 volts area. If so, you have a voltage problem.
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Old 10-13-2011, 09:20 AM
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In my case, I had been running the radio, radar and HDS for over an hour before lowering the engine trim. It was just a one-of situation voltage-wise. I'll be on the lookout for the dreaded "black plague" on my HDS screen brightness. If I get that <11V alert again because of screwing around at the dock, I'll reboot the HDS before going out and after the engine is running.
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Old 10-15-2011, 03:17 PM
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Aw yes voltage issues again!
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Old 10-16-2011, 08:15 AM
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Yeah.....pesky electronics eat volts like my dog goes through kibble.
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Old 10-17-2011, 12:03 AM
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You probably know theres a reste function. Wish I remembered what it is, I have it written in my manual in the boat, but if you do not have a manual you can find it on LOWRANCE web page. Have my second LOWRANCE, this one being a hds8. I had my older one do some funky things a couple times the nes on once, a soft reset fixed it every time. But the psoter that told about the brightness adjustment is correct. Don't know why LOWRANCE said they never heard of the problem, probably new. Personally I never been able to actually talk to anyone at LOWRANCE, I always get forgotten on hold but they do have a great web page. in the time I owned my first LOWRANCE I had 3 HUNNUNBIRDS go dead, and they had no reset.
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Old 10-18-2011, 01:52 PM
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Thanks Gentlemen for the trouble shooting ideas...I'll check the voltage at the unit and see what it's reading.
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