Question about Ashdown Klystron 500w Bass Amp Head

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Hi ther the fuse has blown on the speaker out circet on my new amp any ideas why this would happen?

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The fuse blew because of excess current. The cause of the excess current is either excess volume, a short in the speaker, OR the amp has failed and is shorted to one of the power rails internally and is driving DC current out.

Replace the fuse and use a meter to check the output voltage with NO speaker connected. It should be under 1/2 volt period. If it is, then check the resistance of the speaker. The DC resistance should be a little less than the rated impedance. Otherwise if the amp is kicking out a higher voltage or blows the fuse again, have the amp repaired.

Posted on Mar 28, 2011

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Posted on Jan 02, 2017

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Is there a fuse in this amp? is it replaceable without soldering?


Hi, 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.

Instructions

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.



Hope it helped..

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