Why does my sub amp keep blowing fuses?
In most cases, an amplifier will blow fuses due to internal damage caused by the way it was installed. An amplifier that blows the main power fuse immediately after you turn it on or when the fuse is inserted into the fuse holder is usually damaged in its power supply or output section, and will require serviced.
What should I do if my amplifier fuse blows?
If you cannot see all of the wire, disconnect it from the amp and see if the fuse blows when it’s inserted into the fuse holder. If it does not blow, the wire is fine and there’s probably something wrong with the amplifier. With more experience, you’ll be able to test for a short with an ohm meter.
Why does my DBlock amplifier keep blowing fuses?
If the main fuse isn’t blowing but one of the fuses in the dblock is blowing, that tells you that there is a problem beyond the distribution block. It could be that the wire feeding the amplifier is shorted to ground or there is something wrong with the amplifier. If you can see the entire length of the wire, make sure the insulation is intact.
What happens to the voltage when a fuse is blown?
When dark, there is no voltage on that point in the circuit. When a fuse is blown, there is voltage on only one side of it. When the fuse isn’t blown, the voltage is the same on both terminals of the fuse. In the image below, you can see that there is voltage on every point.
What should the current be when replacing fuses?
When replacing the fuses, temporarily install fuses rated at ~1/2 the current of the originals. This will help protect the amp’s power supply and circuit board if they were not damaged when the amp blew the original fuses.
If you cannot see all of the wire, disconnect it from the amp and see if the fuse blows when it’s inserted into the fuse holder. If it does not blow, the wire is fine and there’s probably something wrong with the amplifier. With more experience, you’ll be able to test for a short with an ohm meter.
Why does the fuse keep blowing on my subwoofer?
The fuse blows because there’s a fault in the amp. It’s probably cheaper to replace the amp than fix it, assuming the driver is OK. Click to expand…
If the main fuse isn’t blowing but one of the fuses in the dblock is blowing, that tells you that there is a problem beyond the distribution block. It could be that the wire feeding the amplifier is shorted to ground or there is something wrong with the amplifier. If you can see the entire length of the wire, make sure the insulation is intact.
What kind of fuse to use on subwoofer?
There are two types of fuses that could be used. One type is the slow blow fuse, which will enable the device to withstand an over-current condition over a very short period, and the second is a fast acting fuse, which would blow more quickly in an over-currant situation.