Why Do Guitar Amps Blow Fuses?


guitar_tube_amp

Guitar amps blow fuses for a variety of reasons. It could be because of a faulty or outdated component, too much power being sent to the amp, or an issue with the wiring. In most cases, however, it’s because the amp is being overloaded with sound.

In this article, I’ll go over the different reasons why guitar amps blow fuses and what you can do to prevent it.

So without further ado, let’s just get straight into it, shall we?

What Causes A Guitar Amp To Blow A Fuse?

There are many reasons why a guitar amp could blow a fuse.

Overloading the amp is one of the most common reasons why they blow out, but there are other problems that can cause this as well.

Some common causes of an amp blowing its fuse include:

  • Faulty components
  • Outdated parts
  • Damage due to water/moisture or heat/cold exposure.

By far, however, overload is the number one reason why fuses inside amps get blown out.

So now I’ll go over how each of these things can cause your amplifier to short-circuit and thus blow its fuse(s).

Faulty Components

As briefly mentioned above, one of the most common reasons why guitar amps blow fuses is because of a faulty component.

This could be anything from a bad valve to a wiring issue. If you’re unlucky, it might even be something as serious as a burnt-out transformer.

In order to fix this, you’ll need to track down the faulty component and replace it. This can be a tricky process, especially if you’re not entirely familiar with how the amp is put together.

Outdated Parts

Just like anything else, guitar amps are susceptible to becoming outdated.

One common issue caused by outdated parts is a fuse blowing out. So if you’re dealing with an amp that keeps blowing its fuse, it might be worth checking to see any of the components are outdated.

Of course, if you’re unsure as to whether or not a specific part is old, the best thing to do is compare it with a new one.

When I say ‘outdated parts‘, what I mean is, it could be as simple as an old capacitor or resistor being different from those used in modern amps.

Damage Caused By Water/Moisture Or Heat/Cold Exposure

It’s possible for certain components inside the amp to be damaged by water and moisture.

In some cases, this might not lead to a blown fuse right away – but over time it will eventually cause your amp to short-circuit and thus blow its fuse(s).

On the same subject is damage caused by extreme heat and cold exposure.

So every now and then I would suggest going over the entire amp with a fine tooth-comb just in case any of the parts have been damaged.

How To Prevent An Amp From Blowing Its Fuses

There are a few ways you can prevent your amp from blowing its fuse.

The first is to make sure you don’t overload it with sound. Of course, this isn’t always possible if you’re playing songs that use a lot of power.

In that case, the best thing to do is take the effects pedals out of the equation and leave them on a different channel – but still plugged into the same power source.

This way, they won’t draw any power from the guitar amp itself and thus not cause it to short-circuit and blow its fuse(s).

The second way to prevent your amp from blowing its fuse is to unplug all of the power sources that aren’t being used by the amplifier.

This means you should also check that any effect pedals are not plugged into their own power source as well – even if they’re turned off.

The last thing you want is for a pedal with a faulty component to cause your guitar amp to blow its fuse(s).

FAQ – About Guitars And Amps

Q: How do I know if one of my guitar amp’s fuses has blown?

A: If you’re not sure, the best way to test it is to unplug all of the power sources and then plug them back in. If the fuse blows when you do this, then you know it’s the amp that’s causing the issue.

Q: My guitar amp keeps blowing its fuses. What could be the problem?

A: There are many reasons why your guitar amp might be blowing its fuses, but some of the most common ones are faulty components, outdated parts, or damage caused by water/moisture or heat/cold exposure.

Q: What can I do to prevent my guitar amp from blowing its fuses?

A: The best way to prevent your amp from blowing its fuse is to make sure you don’t overload it with sound, and by unplugging all of the power sources that aren’t being used by the amplifier.

Q: I’m not sure if one of my guitar amp’s fuses has blown. What can I do?

A: If you’re not sure, the best way to test it is to unplug all of the power sources and then plug them back in. If the fuse blows when you do this, then you know it’s the amp that’s causing the issue.

Q: Will an amp still turn on with a blown fuse?

A: If the fuse is operational and blown, the amplifier will not turn on since the circuit that provides mains voltage is open. Simply replacing the fuse may or may not be sufficient to fix the situation.

Q: What should I do if my amp keeps blowing its fuses?

A: If your amp is blowing its fuses, the best thing to do is take it to a professional who can diagnose and fix the problem.

Read Also: My Gear Recommendations

Recent Posts

error: Content is protected !!