Amp turn on problem

[Mp3SUV]

Ok, got a new deck installed (Alpine 9853) and had it professionally installed. Now the amp for the sub is not turning on. Heres what i have diagnosed so far.

- Subwoofer turned on in deck options.
- Voltameter says +,- for amp is at 12.7v.
- Took it back and the installer said it was correctly hooked to the deck.
- Fuses checked and were fine.


Im guessing the amp on lead is a bad connection somewhere...what kind of voltage should i get with the voltameter when connected to the amp turn on lead???

 

[RanSit]

touch your power battery line with your ground line and see if you get a spark might be either your ground line isnt conencted...battery line isnt conencted or a fuse blew

 

[White97Jimmy]

Yea, I would check the route of the ground line to make sure it isn't pinched or that it is grounded right.

Also, check your remote wire, that is usually the cause of most "non-working" amps. Since its a small gauge wire, it gets pinched easy.

 

[TJM623]

check for a cold solder on your power fuse, all that stuff was the same for me...changed my power fuse in the power line from battery and it worked, really wierd...considering it worked before and then just stopped, but wasn't blown.

 

[Wagonized]

run a small wire from the battery terminal on the amp to the remote terminal...if the amp turns on then check the remote wire connection at the deck again

 

[pj8847]

touch your power battery line with your ground line and see if you get a spark might be either your ground line isnt conencted...battery line isnt conencted or a fuse blew

NEVER!!! touch the positive battery feed to a ground/ground feed, aside from blowing out the inline fuse,( if you installed one) you could do alot more damage than it's worth. ALWAYS use a proper tester. Even if its a simple test light, it will do the job safely, without blowing out anything.

People forget that a vehicle battery packs alot of punch, and if the feed line off of the battery is large enough, grounding it can have catastrophic consequences.

I'm not flaming or bashing anyone, but a comment stating to GROUND your power line to see if you get a spark is just pure STUPID! Even if it is for a "split second" to see if there is power, the arc created if power indeed is flowing can be enough to "weld" itself to the ground source, creating a massive short which could cause the battery itself to explode and possibly damage the electrical system in the vehicle. If the line isn't that large, then your faced with the possability of the line heating and burning off the insulation and taking whatever is close to it with it. Never mind the issue of bodily injury. It's just stupid... :thumbdwn:

 

[RanSit]

lol he has a good point it is common sense..but i have none and it works for me lol