How to Change a Fuse in a Guitar Amp


Blowing a fuse in an amplifier is a problem that most guitarists face at one time or another. If an amp won't turn on, or it turns on for a second, then makes a popping sound and turns off, the problem is usually a blown fuse. Though a blown fuse can be a hassle, especially during a performance, it does not have to put a stop to your musical enjoyment. With a spare fuse you can be back jamming to your favorite tunes in no time flat.

Things You'll Need

  • Fuse
  • Turn off the amplifier and unplug it from the wall.

  • Locate the fuse, which is usually found at the back of the amp. The fuse will look like a small black wheel sticking out of the amp with a number and the letter V next to it. For example, 9V.

  • Gently turn the fuse counter-clockwise to remove it from the amp.

  • Discard the old fuse.

  • Insert the new fuse into the empty fuse slot and turn it clockwise until it is firmly in place.

  • Plug in the amplifier; make sure the power switch is in the off position.

  • Turn the amplifier on to make sure the new fuse is working properly.

Tips & Warnings

  • Always plug the amp into a power strip with a surge protector to prevent blown fuses. Carry extra fuses to rehearsals and performances to avoid running into problems.
  • Never change a fuse with the amp turned on or plugged into the wall.

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