Hey everyone I need urgent help,

Last week it was really cold, and I didn't drive the car for a week or so as I'm at college, so I had to jump my battery. I kept my head unit (Alpine CDA-9886) off before the jumpstart and off afterward as well so I didn't waste any power to best recharge the battery. That didn't help though even after a long drive as the next day the car still didn't start. I decided to take the battery out thinking I was gonna get a new one. The battery was essentially frozen, so I thawed it overnight and completely charged it, and is read 98% charged, so the battery is plenty good. I reinstalled the battery back into the cobalt the next morning.

Everything works perfectly fine and the car starts really easily but the speakers don't work now. Even if I turn up the volume up really high on the head unit nothing is heard. No sound from any speaker.

I have: reset the head unit, made sure all connections behind the head unit were good, made sure battery connections are good and made sure all head unit settings are normal.


Does anybody have any ideas as to what may have happened to my system or speakers that would yield no sound? I'm really worried since I have good Polk Audio speakers and they are only a few months old. Can it be a blown fuse, blown speakers, bad headunit, bad connection, what can it be? Am I forgetting something?

Please help! Any feedback greatly appreciated.

 

bump, please help

 

Do you have a factory amplifier or stock amplifier? Have you checked to see if your H/U has retained settings? Does it have an attenuate button?

If you want to reassure yourself that it's not the speakers, take one of those square duracell 9volt batteries and pop the speaker by touching neg to neg, pos to pos from the speaker wires to the battery terminals...if you hear a pop your speaker isn't blown.

 

look for an "amp" fuse if you have the pioneer system and if you have the module harness unplug it wait 10 mins then re plug it in and see if that does anything

 

My system is an alpine cda-9886 head unit with an alpine power pack 45x4 watts RMS amplifier. I have polk audio speakers. The power pack amplifier is a plug and play one that connects behind the head unit. So I do not have the pioneer system nor anything stock at all as far as audio goes. I checked all my Head unit settings and everything looks normal.

I have a subwoofer and amp, and the sub works fine, but the speakers do not.


Is there a security thing where it disables audio when power is disconnected? I know for a lot of cars after removing the battery you have to enter a code to regain access to stuff. But I don't think this applies here.

 

If your headunit powers on and you can modify settings chances are there's no code....more likely than not, that power pack is the issue. try removing the power pack and running a speaker off the H/Us built-in amplifier on one channel temporarily...

 

If your battery died and you jumped it most likely your deck reset it's self so that means your Alpines 9886 Power IC turned off. You need to turn it back on and it will be good

 

Power IC is turned on. I am going to call Alpine Technical Support and see what they think. thanks guys.

 

hey, just as an update, I fixed the problem. in case anybody ever experiences this, you must disconnect the battery and disconnect the power pack from your alpine head unit. then, reconnect the battery, start up the car (optional), and reconnect the power pack/speaker harness. Really stupid how this happened. must be a programming thing thats an unseen issue on the head unit.

 

Thank you very much for posting this. I had the same problem and was able to resolve it using your post.