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| How to fix car audio amplifier that keeps blowing fuses |
A fuse is added within an electrical circuit to ensure maximum protection to both you and your car audio amplifier. There are two fuses usually found in a car audio amplifier installation, one fuse is found attached onto the car amp itself and the other fuse is located in line with the red power wire attached to the positive (+) terminal on the car battery. When an electronic circuit becomes abnormal, the small wire that you see inside a fuse breaks. This only happens in rare cases but if your car amplifier is not powering on this is the first thing you should check. Fuses are cheap to replace and ideally you should be trying to fix this problem yourself rather than going to your local car audio shop. If your notice that your car amplifier keeps blowing fuses every time your car amplifier powers on, then there is a short circuit somewhere.
In order to fix a car audio amplifier that keeps blowing fuses you need to first identified if the fuse from the power wire is blowing or the fuse fitted on the amp. If it’s the power wire, you need to check all wires attached within the plastic fuse holder found near the car battery are firmly connected onto each end and that the ring terminals are holding the wire correctly. Loose connections can cause a fuse too blow because the copper found inside the car amplifier wiring kit power wire can't make good contact and sends to much current to the amp blowing the safety fuse. If you are still having problems, check the power wire that runs all the way down your car, there could be a cut in the insulation and this can be shorted out with the metal on the car. Also make sure the positive and negative terminals are not coming in contacting with each other with the power and ground wires. Check each terminal on the amp there is no metal fuzz inside each terminal, braids of wires can cause shorts.
If you have troubleshooted your car audio problem and car amplifier keeps blowing fuses, the fuse that you're using may too small for the electrical load you are placing on it. You need to work out what fuse you should be using on the car amplifier and power wire. The best place to find this is within the specifications of the user manual of the car amp. Chance are you won't have the box that should contain it, but a quick search on the internet with the make and model will allow you to hopefully find an .PDF manual. For example, if you're using a 20 amp fuse and your amp draws 40 amps, then at high volumes when it consumes the most voltage the 20 fuse will simply break. This could be occurring in your situation and is something that you should check.
Worst car scenario the car amplifier itself is faulty. There could be a short on the actual circuit board and this can sometimes happen when it has been stored incorrectly in a cold location. There are many instances where people disconnect their car audio stuff leave it in a shed for 5 years and then come back to either selling it on or reinstalling it, without knowing damage has been done to the PCB. I hope this article helps you on how to fix a car amp that keeps blowing fuses.
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