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Old    Jeff Walker (surfdad)      Join Date: Sep 2004       02-14-2013, 7:57 PM Reply   
Hey folks, I am having some problem with our stereo. It was professionally installed by Liquid Trends about 2.5 years ago. Recently I had to replace the 24 month life batteries and since then the stereo turns itself on. The result has been drained batteries after about a week.

I know folks will be skeptical, so here are some pictures. The toggle on the dash is OFF. The ignition is off. It's a little hard to see, but the AMP is powered up, the face on the head unit is flashing on and off and there is a very slight buzz in the speakers.

Any idea what the problem could be? Is there anything I can chase down to test?
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Old    Miguel (migs)      Join Date: Aug 2006       02-14-2013, 8:17 PM Reply   
Christine!!!!
Old    Wes Umland (Wesatfaith)      Join Date: Jan 2013       02-17-2013, 12:00 PM Reply   
I had the same problem with my x star. The bateries were dead that's why my sterio kept doing the same thing as yours. Hope that helps
Old     (Truekaotik)      Join Date: Jun 2012       02-18-2013, 12:31 PM Reply   
I have found that the MBquart head units fail in different ways... When it happens again, check the red wire on the back of the head unit to see if it has power. If It does not, it's prolly internal on the head unit, meaning a breach somewhere on the board from the constant. Just a guess..
Old    Brian (brianinpdx)      Join Date: Aug 2009       02-18-2013, 3:39 PM Reply   
Jeff - Give Dennis a call at LT. I think you got a head unit doing the freak dance. when amps turn on they are getting triggered. A couple possible causes for this, but if your head unit is flashing... I think the diagnosis starts at that point. If it doesnt get sorted out, hit me up and I'll assist.

-Brian
Exile Audio
Old    Earmark Marine (david_e_m)      Join Date: Jul 2008       02-18-2013, 4:12 PM Reply   
Jeff,
Several theories have been presented here. Low voltage can confuse microprocessors and anything, while improbable, is possible. Also, water damage/deposits can cause a jumper between traces and a product to turn on unexpectedly.
A simple $10 voltmeter/multimeter will allow you to isolate without question in a few short minutes where the problem is originating.
Low voltage on the boat?
A trigger from the source unit when off?
A voltage present at the amplifier turn-on terminal?

David
Earmark Marine

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