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Amp won't turn on


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sammyd 
Member - Posts: 3
Member spacespace
Joined: April 17, 2006
Location: Canada
Posted: April 17, 2006 at 8:06 AM / IP Logged  

Hey all, I'm watching a friends car for a week, and my luck his sound system stops working on me.  Here is how it fell apart for me.

I was listening to music, pretty loud, but not to the point where anything should "blow".  I shut the car off, went inside, came back out an hour later, and now I have no sound.  I checked the amp, and the light for the amp isn't turning on now.  I was able to check all fuses, and nothing is wrong.  As far as I know, nothing has come disconnected from the back of the deck, and I know all cables are fine at the back of the amp.  I also tested the power to the amp and everything was fine.

His system is a

Head Unit: Alpine CDA-9847

Amp: Alpine V12 MRVF450 5 Channel

Subs: 2 x Rockford Fosgate P3's

And has Alpine front and rear speakers, also hooked up to the amp

Now my questions are, could I have a bad ground that came loose?

Could I blow the amp, without blowing any fuses, or speakers first, on a fairly new system?

Does the amp have a feature to reset it, or if it's played "too loud" then is there something I have to do.  I'm baffled because I didn't do anything out of the ordinary.  But go figure, it's not my car, but I do have 8 days to try to fix it.

Any help will be greatly appreciated....

Thanks,

-Sam

sammyd 
Member - Posts: 3
Member spacespace
Joined: April 17, 2006
Location: Canada
Posted: April 17, 2006 at 8:09 AM / IP Logged  

Ohh yes, I've also checked the obvious like the radio and cds, checked all volume, went threw head unit settings.

I checked the fuse under the hood.  The trigger wire looks to be plugged in to the back of the deck from what I can peek and see.  It's definitly plugged to the back of the amp.

Thanks Again,

-Sam.

xtremej 
Gold - Posts: 1,440
Gold spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: February 24, 2006
Location: United States
Posted: April 17, 2006 at 10:06 AM / IP Logged  
The remote turn on wire has 12 volts?
sammyd 
Member - Posts: 3
Member spacespace
Joined: April 17, 2006
Location: Canada
Posted: April 17, 2006 at 10:56 AM / IP Logged  

That would be the trigger wire? Small blue wire that goes from back of the deck to the amp?

xtremej 
Gold - Posts: 1,440
Gold spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: February 24, 2006
Location: United States
Posted: April 17, 2006 at 11:02 AM / IP Logged  
yes, it would.
sparkie 
Platinum - Posts: 2,061
Platinum spacespace
Joined: November 06, 2003
Location: Canada
Posted: April 17, 2006 at 8:20 PM / IP Logged  
Use a volt meter and measure from the amps ground connection at the side of the amp to both the main power wire and the remote turn on wire. Have the radio turned on when you test these wires. You should have 12 volts on both wires.
sparky

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