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Thread: Car amplifier won't power on.

  1. #1
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    Car amplifier won't power on.

    Hey guys,

    I'm completely new here and only found this site via google. I've been searching everywhere for someone in my same situation that actually figured the problem out or provided a good answer. So far I've found no good help.

    So what happened is my Car amplifier turned on late one day while driving my friend home. After coming on about a full minute late after the car was already running, it shut off about 1 mile down the road. I pulled over and tried to get it to run, but it wouldn't start up at all. Once I got home I got out of the car to move my parent's cars so I could get in the garage in order to take a look at it in the warms (its about 12 degrees where I am). Once I turned the car on to pull into the garage, the amp powered on and I left it alone.

    The amp worked fine for about an hour the next time I took it for a ride. It then died while I was driving on the highway. I've tried everything to get it to work, but haven't been able to. I've checked the wires with a multimeter and I really don't know what I'm looking for.

    The amp is getting 1volt of power. The inline fuse gets 12v in and outputs 1v on the other side. It doesn't look blown, but I never measured it when I first set it up, so I don't know what I'm looking for.

    Thanks for any advice,
    Mike

  2. #2
    Car Audio Moderator durwood's Avatar
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    If you have 12V on one side of fuse referenced to ground and 1V referenced from ground on the other side of the fuse, the fuse is bad even if it doesn't appear to be visually. You can also take it out and measure the resistance (should be extremely low like a short to be good).

    Replace the fuse.

  3. #3
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    Thanks alot man

    I replaced the fuse today and the amp powers on again. I dunno why it blew out or why it came one ever after the first time it shut off. But thanks alot for the info, subs are back up and running again.


    Mike

  4. #4
    Car Audio Moderator durwood's Avatar
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    Excessive heat or vibration most likely. It's rare but I've seen it happen on more than one occasion.

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