Headunit randomly restarts while driving?

[TheArchitect 10+ year member]

Not sure exactly why this has been happening but i noticed it driving on the highway to work this morning.

I was going maybe 75mph and the HU (AVN5500) just randomly restarted like it lost power or something and regained it very quickly.

I didnt notice anything else in the car restart or lose power nor did i feel anything engine/driving wise.

I had swapped out my stock alt that was dying for a backup stock OEM alt til i got my HO a full day before this and had driven from L.I. to Hartford with no problems...I tightened the serp belt to what i believed to be the right tension.

It most recently happened when i slowed down and idled into my parking spot at home

My voltage is pretty good and is around 13.9 at idle and in the low 14's when driving

Ive got the big 3 done is Knu Fleks 0/1 etc etc batt is charged

Could it be that the belt/pulley is slipping for a split second now and again?, Thoughts?

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[basscort2009 5,000+ posts]

my kenwood does same thing randomly. shitty HU is my case. not a solution but just letting u know it might be "shitty HU" syndrome

 

[hornedfrog1985 5,000+ posts]

Might be shorting out.

 

[TheArchitect 10+ year member]

im hoping its just the HU because it is pretty old but it just seems unlikely that it would randomly start shorting out...guess its possible though

 

[NoCoSPL 10+ year member]

clean your contacts between your removable faceplate and the deck itself, mine vibrates, looses contact and will restart sometimes.

 

[TheArchitect 10+ year member]

guess thats for the kenwood guy. give it a try

 

[loud-n-low 10+ year member]

clean your contacts between your removable faceplate and the deck itself, mine vibrates, looses contact and will restart sometimes.

this

 

[Ferendon 10+ year member]

Mine does the same shit. Pioneer DEH-P8600MP.

 

[TheArchitect 10+ year member]

Mine does the same shit. Pioneer DEH-P8600MP.

Has yours been doing this for the majority of the time youve had it installed or did it start doing this somewhere down the line?

 

[oldzy 10+ year member]

My Kenwood DNX9140 did the same recently. Very buggy overall I am finding.

 

[soloXgt 10+ year member]

loose ground? loose power? Loose something?

 

[Chrispy 10+ year member]

Some Alpine units had problems with the factory power an ground wires in some vehicles not being sufficient enough so you would have to run your own power/ground wires. This is what I had to do with my 9885. I used some 12 guage wire and ran it direct to the battery. Mite be a similar problem. Be sure to fuse.

 

[michaellane 5,000+ posts]

may sound dumb but I had the same thing going on. I cleaned my battery terminals (had build up on them) and it fixed it. trust me.

 

[RJesus 10+ year member]

I have a kenwood exelon kdc x790 fs for cheap, pm me if interested in a replacement hu.