If you have just recently installed a brand new car amp for your subwoofer or speakers, you notice that it keeps blowing fuses on the power wire immediately, begin with looking at these handy simple troubleshooting steps. This audio problem usually occurs because there is a short taking place, there is too much current being pulled in or there is a fault with the equipment itself.
Identify a short. Check the full wiring including the power and ground wires. Ensure they are not touching anything and don't have any worn insulation. Check on the terminals on the amp to ensure there are no left over copper wire braids trapped between touching each other causing the fuse to blow.
Try a different grounding spot. Move it to a different location that is more stronger. Please don't use the edge of a seat belt bolt. What you want to do is sand down a particular area on the cars chassis, drill a hole and mount a stainless steel bolt through the grounding loop. A poor ground can cause an imbalance and a overload to voltage.
Increase the fuse size. Sometimes the fitted one is smaller than what the amp is rated for in its user manual specifications. This can happen if the previous owner didn't have the correct size fuse and made the most out of any similar fuses that he or she had laying around the garage. So try fitting a slightly higher fuse and see if it stops blowing fuses this time.
If you have tried all of the above and there is no change, then its most likely a fault on the PCB of the car amplifier. You will need to take it back to the manufacturer for a repair if its still under warranty.
Try a different grounding spot. Move it to a different location that is more stronger. Please don't use the edge of a seat belt bolt. What you want to do is sand down a particular area on the cars chassis, drill a hole and mount a stainless steel bolt through the grounding loop. A poor ground can cause an imbalance and a overload to voltage.
Increase the fuse size. Sometimes the fitted one is smaller than what the amp is rated for in its user manual specifications. This can happen if the previous owner didn't have the correct size fuse and made the most out of any similar fuses that he or she had laying around the garage. So try fitting a slightly higher fuse and see if it stops blowing fuses this time.
If you have tried all of the above and there is no change, then its most likely a fault on the PCB of the car amplifier. You will need to take it back to the manufacturer for a repair if its still under warranty.
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