Fender Supersonic Problems: 12 Common Problems with Solutions!

Fender Supersonic 22 is a great guitar amplifier. For any guitarist, it is one of the top choices for guitar amplifiers. So, it’s very frustrating if your Fender Supersonic 22 has problems.

So, how do you fix Fender Supersonic 22 problems?

You need to check and replace the PSU for your Fender Supersonic problems. Another common issue is that the supersonic gets too hot. Ensure proper air ventilation to avert the problem.  The footswitch of the Fender Supersonic 22 can be broken too. You have to replace it if this happens.

Don’t stress! We’re troubleshooting each problem in brief. That way you can easily fix or avert any problems of Fender Supersonic 22.

Let us get started!

Do Problems Vary with Fender Supersonic Models?

The answer to this question is both yes and no. There are two fender supersonic models, SS22 and SS60. Both of them have specific problems. 

However, there are some common problems as well. Not turning on and overheating are the most common ones that happen to both of them.

Moreover, the SS22 model faces more issues than the SS60. It has footswitch, volume, and noise issues. On the other hand, the SS60 has scratching and sound cracking issues.

Hence, we can say that there are both specific and common issues between the two models.

8 Fender Supersonic 22 Problems And Their Solutions

Fender Supersonic 22 is one of the best guitar amplifiers. It is a professional and easy-to-use tool for any guitarist. The amplifier will provide a smooth melancholic sound which is a delight to listen to.

A picture of a fender supersonic
Source: davesguitar

Nevertheless, Fender Supersonic 22 can face problems. The issues with Fender Supersonic 22 can cause many unwanted circumstances. Let’s see 8 common problems of Fender Supersonic 22 and their solutions.

Problem 1 of 4: Fender Supersonic 22 Doesn’t Turn On

Fender Supersonic 22 not turning on is a very common problem. Many issues can cause the problem. It gets frustrating when your Fender Supersonic fails to even start.

Even other musical instruments can face these sorts of issues. For instance, the blue yeti mute button issue is another common problem.

And the same can be said for music players too! Like the issues with Fiio x1 failing to turn on.

When your amplifier doesn’t turn on, it could happen for 3 reasons. Firstly, Fender Supersonic 22 isn’t connected on decent ground. 

Secondly, a bad PSU (Power Supply Unit) can be another reason. Lastly, the yield transistor of Fender Supersonic 22 is busted. 

Let’s see the solution to the problem.


Firstly, make sure the Fender Supersonic 22 has a decent base. This means it’s fastened to exposed metal that’s clean, rust-free, and secure.

Secondly, check the PSU and the power supply adapter. If you smell anything funny or see cords broken, you have to change the tube amp power supply. Sometimes, a broken power supply adapter can also be the culprit.

So, it’s better to have a Musical Fidelity Kit for this kind of occasion.

a picture of fender supersonic 22 rear panel

Thirdly, your yield transistor can be busted. To troubleshoot it, check the protection between terminals of the yield transistor. If any terminals show 0-ohm, remove the terminal. Then, get a new terminal and attach that with the yield transistor.

Your Fender Supersonic 22 will again turn on by following the troubleshooting method.

Problem 2 of 5: Fender Supersonic 22 Gets Too Hot

We all know that amplifiers can get hot. But, in the case of Fender Supersonic 22, the issue can be troublesome. 

Fender  Supersonic 22s’ performance drops significantly if it gets too hot. For example, low-frequency sound can get distorted. Or even worse, suddenly the Fender Supersonic 22 hangs during any performance.

While jamming, you touch any metal part of Fender Supersonic 22. And, you felt it was hotter than usual. Well, that’s an issue. Although guitar amplifiers get hot, when it exceeds the usual temperature, they will sound bad.

Also, the heating issue is very frustrating! That’s why many think of replacing it-

Firstly, your fender supersonic 22 is hot for poor air ventilation. You may be keeping the amplifier in a confined place. 

Lastly, speakers can be wired to a non-impedance cord. For this reason, your speaker will receive more input and consume more power. Hence, your Fender Supersonic 22 is hotter than usual.

Let’s check some steps to avert the problem.


Firstly, you can turn off the amplifier to lower the temperature. You can do it after a couple of hours of using it.

Secondly, use fans to keep the temperature in control. Many suggest getting 3-5” PC fans for this. Also, keep the amplifier in an open space.

Lastly, make sure the speakers are connected to an impedance cord. Also, keeping the bass low can resolve the issue.

Problem 3 of 4: Footswitch Issue

The Fender Supersonic 22 footswitch is an essential tool. It helps you to switch between channels and gain distortion. But, it is prone to some issues.

For starters, The footswitch can be broken. The flimsy footswitch is easily broken. When the signal is dropped, you will notice this problem. It will no longer have its normal click when you put your foot on it.

Let’s see the solution to the issue.


To begin, open the pedal and inspect the footswitch’s connection. You will need to purchase a replacement

A picture of a fender supersonic 22 foot switch
Fender Supersonic Foot Switch

After that, put it in the proper spot. Make sure everything is aligned perfectly or else it won’t work. 

Finally, use a soldering iron to reattach it to its original location.

If you’re still unsure about how to work this around, here’s a practical troubleshooting video for you-

Now, let’s head on to the next issue.

Problem 4 of 4: Low Volume

Another common scenario of Fender Supersonic 22 is the low volume issue. As we all know, amplifiers are great to resonate the lower frequency sound into higher.

But, due to certain malfunctions, Fender Supersonic 22 low volume issue happens. You won’t get the desired sound out of the guitar amplifier for it. A non-functional UMC404HD can also cause similar problems. So keep an eye out!

Anyways, these are the problems usually Fender Supersonic 22 faces. The problems seem to be critical as it hampers your guitar sound. 

Is the Fender Supersonic 22 volume level too low

Well, if that’s the case it is tied to equalizer settings. Another possible thing can be the connection between your guitar and amplifier is loose.

Let’s see how to fix the issue.


Firstly, you need to set your equalizer of Fender Supersonic 22 correctly. Otherwise, for different genre songs, you will get low volume. The good news is that guitar amplifier eq settings are easy to set.

A picture of reverb tank connector

Lastly, make sure the connection between your guitar and amplifier is not loose. If it doesn’t fix the issue, then you need to get a new instrumental cord. Luckily, you can get the Fender instrument cable.

Problem 5: Fender Supersonic 22 Hissing Issue

Some fender supersonic 22 users might face this problem. A loud hissing sound comes out of the amplifier. This may not be an issue while playing on loud volumes. But in the case of home practice volumes, this can be a nuisance.

This happens because Fender usually biases these things toward the colder side. This tends to create a hissing sound. Also, there might be a problem with the build quality.

Let’s have a look at the solutions.


First, you need to change the bias. Adjust the bias to the warmer side. This will eliminate most of the hissing. There might be an insignificant hissing sound which should not be a problem. 

A picture of hum balance and bias adjust of fender supersonic

If there is a problem with the build quality, you should claim the warranty. Fender warranty covers the noise fix of the Supersonic 22. 

Problem 6: Fender Supersonic 22 Noise

Nothing can be more annoying than a noisy amplifier. The Fender Supersonic 22 is notorious for its noise.

While switching from the clean (“vintage”) channel to the lead (“burn”) channel, it pops very loudly. This can be very annoying during practices and live performances. 

However, the solutions to the problem are very straightforward. Let’s have a look at them.


The SS22’s popping issue can be fixed by swapping out K1. Do this if you are comfortable fiddling with an amplifier’s internals. It’s not too hard to do. Otherwise, you will need to take the amplifier to a service center.

You can also use Deoxit contact clear or similar cleaning material. Spray the pins with the tube and gently work them in and out a few times. It might be as simple as cleaning the pins.

Problem 7: Fender Supersonic 22 Reverb Hum

Humming and distortion are sometimes mistaken for one another. However, they are completely different phenomena.

Jammers who have been distracted by a hum during a session find it extremely distracting.

However, the solution is not annoying like the problem itself. Let’s see the fix.


The good news is that you may eliminate the buzzing immediately. You can connect the audio source system and amp to a single electrical power connection.

Also, try resoldering the connections to be safe.

a picture of resoldered connections

Keep in mind that you’ll need to trace the source of the humming sound. Do this if it doesn’t work. 

If the humming persists, it would be a good idea to check for loose connections. You need to check the frayed wires in your amplifier too.

Problem 8: Fender Supersonic 22 Reverb Not Working

In terms of surround sound and reverb, Fender Supersonic 22 is unrivaled. However, there are instances when the machinery acts up and the reverb may not work properly.

You might get annoyed and confused with the problem. However, the problem is easily manageable. The solution does not require any special fix.


A common reason for this is improper alignment. Check if the speakers are properly aligned or not.

If you have access to a similar amplifier, you can hook up the tank. Then you can determine whether or not the amp is malfunctioning. If you connect a different tank and power returns, you’ll know the tank was faulty.

If the amp doesn’t produce a splash when shaken, you can replace the reverb recovery tube. Replace it with the one you know will work. You can test if a reverb has been added by playing through it if this occurs.

If there is no reverb after a splash through the speaker, replace the reverb driver tube. You might require a plan or diagram to figure out which tubes are the drivers. Also, find out which are the recoveries.

4 Fender Supersonic 60 Problems and Their Solutions

The Fender Supersonic 60 is a high-powered 60-watt amp. It comes with tons of great features to improve your playing. It provides a wide variety of inputs and improves your signals without altering their tonal quality.

Do keep in mind that the Fender Supersonic 60 is out of production for a while. You will not find it on their official website. But some shops or online stores might sell it at a different price.

However, as popular and powerful as it is, there are some problems. Worry not, each problem has its own solution. 

Let’s have a look at 4 Fender Supersonic 60 problems and their solutions.

Problem 1: Fender Supersonic 60 Crackling Sounds 

One typical problem with the Fender Supersonic 60 guitar amp is that it makes crackling noises. While its volume is normally low and rarely causes problems for users, it is nevertheless unpleasant.

While playing, it can become aggressive at times, causing issues for the player. When turned up loud, the Fender Supersonic 60 guitar amp typically emits a crackling sound.

This issue, however, has more depth than that. This can also be caused by poor connectivity.


This could happen if the cables connecting your amp are broken or aren’t connected properly. 

a picture of RCA Connector sub PCB

Make sure everything is connected properly by checking it over. Just by swapping out the frayed cables, your Fender Supersonic 60 guitar amp will be back. It will return to its factory settings and start sounding great again.

It is advised to buy good and short length cables. They tend to deliver the best quality sounds. Try to avoid daisy chain cables as they can cause distortion sounds.

Problem 2: Fender Supersonic 60 Catching Scratches 

Similarly, fret buzz can be caused by scratches on the Fender Supersonic 60 guitar amp. While the overall design and polish are excellent, the quality of the materials used is lacking. As anyone who has used it can attest, it is not scratch-resistant.

Take special care of your Fender Supersonic 60 guitar amp if you use it in gigs. Scratches might detract from the aesthetic value of your amplifier. 


It may be challenging to get rid of them, but you should try. In addition, think about getting a protection cover to keep your amp in while you’re traveling.

For example, Fender Super-Sonic 22 Cover or Fender Hot Rod Deluxe Cover is great to avoid any scratches. 

Before beginning the cleaning process, it is recommended to assess how severe the scratches are. 

And certainly, start with the least abrasive things to protect your Fender Supersonic 60 guitar amps.

Stop using the cleaning product immediately if you find that it is making the problem worse.

A credit card can be used as a scratch gauge. If it slides without sticking, the scratch is probably minimal. It can be removed with a mildly abrasive cleaning product. 

The situation calls for a more effective remedy, however, if the credit card gets trapped.

Problem 3: Fender Supersonic 60 Not Turning On 

Many consumers have also mentioned that their Fender Supersonic 60 guitar amp won’t power on. The buttons are functional, however, the device will not power on. The player’s frustration at being unable to use the amp due to this issue is understandable.

Additionally, this issue can even arise during live performances, ruining your entire evening. 

A picture of fender supersonic 60

The question then becomes, “Why the Supersonic 60 guitar amp won’t power up?”

The power chord may tear or break down due to physical damage. Even a blown-out fuse might cause all the hassle.

Whatever the problems are, the solutions are not complicated at all. 


It’s best to check the power cable on your amplifier first, as it’s usually the source of the problem. If that’s the case, you might want to think about getting a new one.

A professional should be consulted if the issue persists. They will take a look at its individual parts and diagnose the source of the issue.

Fuse protection is standard in guitar amplifiers. In the event of an overload, the fuse will immediately blow. A Fender Supersonic 60 guitar amp may refuse to power on at that time.

There’s an easy solution to this issue. Changing out the blown fuse will get your Fender Supersonic 60 guitar amp back up. 

If you need to replace a fuse, be sure to get one with the appropriate amperage.

Problem 4: Fender Supersonic 60 Overheating

Fender Supersonic 60 overheating is a very common issue among musicians and gigs. This is the direct result of overuse. This happens when you use your Fender Supersonic 60 for an extended time without any break. 

This phenomenon affects the amplifier components and lowers the volume output. It results in low volume output and performance.


The best solution for this problem is to give the amplifier enough rest before using it again. Giving it enough time to cool down will lower the temperature.

Also, make sure your amplifier has good ventilation. You might want to install additional cooling fans if needed.

Fender Supersonic Repair Summary

As the Fender Supersonics have so many problems, you might think that the amp is compromised. 

However, the solutions are pretty simple and straightforward. We have made a solution summary just to make things easier for you. Let’s have a look at it.

Fender Supersonic ProblemsSolutions
Not Turning OnCheck power cable and connections, replace if necessary 
OverheatingCool down the amp between sessions, use a cooling fan if needed 
Footswitch IssueOpen up the paddle and check the footswitch, replace if needed
Low VolumeCheck the connections properly, set up the eq properly
Noise Problems Clean the pins, replace the K1 switch if needed 
Reverb HummingCheck for loose connections, replace frayed wires if found 
Catching ScratchesUse casing when transporting, clean with good quality cleaning material
Crackling SoundCheck for bad connections, replace any damaged wires, and try to use short-length wires
Hissing Noise Issue Adjust the amp bias to the warmer side, and contact the nearest service center if necessary

Are Fender Supersonics Good Amp?

Yes, Fender Supersonic amps are excellent quality amplifiers. It is well known for its custom reverb effects and clean sound tone. The secondary burn channel has good gain options.

However, we will be comparing it with the Hot Rod Deluxe, Prosonic, and Twin Reverb models. This will give us a clear idea if the Supersonic amplifiers are good or not. 

Fender Supersonic vs Hot Rod Deluxe

The Fender Supersonic series just dwarfs the Hot Rod Deluxes. Overall, the Supersonics are way more superior than the latter one. 

For example, the reverb and echo features are more lively than hot rods. The only upside of the hot rods is that they are louder than the supersonics.

But when it comes to clean channel, OD channel, or reverb, it is out-shunned by the Supersonics.

For example, the SS60 has the best raw blue tones in the market. The distortion of the hot rods is fizzy and medium gains are not up to the mark.

Hence, the Supersonics are better than Hot Rod Deluxes.

Fender Supersonic vs Prosonic

The Supersonic vs Prosonic is a popular debate. Both are good amplifiers and provide excellent sound quality.

However, which one is the best has no clear answer. Public opinion varies from person to person. Some say that the Supersonics sound dull and lifeless. Others say the Prosonics have a fuzzy reverb and mid-gain.

Others say that the Prosonic beats the Supersonic by a large margin. It is not as compressed as the Supersonic amps and provides excellent sound clarity. 

It is also more versatile than the Supersonic. The amp’s “class” can be adjusted using the power supply’s three different settings. It also features a great clean mode and an overdrive.

Fender Supersonic vs Twin Reverb

The Twin is the way to go if you value cleanliness. If you’re looking for pristine tones, look no farther than the Twin. There’s a glimmering sheen to it, a lushness to it, and most importantly, it’s LOUD! 

And the overdrive isn’t half bad, either. The Super-Sonic is best used for more powerful applications. The high-gain path may provide more value in the long run. 

Super-clean Sonic’s channel can be toggled between Bassman and Deluxe settings.

However, weight is a factor between the two. The twin reverb has dual speakers compared to the single speaker of Supersonics. This adds weight to the amplifier and makes it difficult to move.

Also, keep in mind that even the Twin reverb has that reverb issues!

So, the question comes, is fender supersonic any good? Here’s a table summarizing the comparisons. 

NameFeature 1Feature 2Price
Fender Supersonic 22/60 Loud & Heavy Excellent Reverb Check Price
Fender Prosonic VersatileExcellent Sound ClarityCheck Price
Fender Hot Rod Deluxe Loudest SpeakerPerfect for Effect Paddles with Good OverdriveCheck Price
Fender Twin ReverbDual SpeakerClean and Pristine ToneCheck Price

Hence, we can say that the Fender Supersonic Amplifiers are one of the best.


How Much Power Does Fender Supersonic 22 Require?

Fender supersonic 22 requires 22w of output wattage. For this reason, the series is named Fender Supersonic 22.

Is Fender Supersonic 22 a Tube Amplifier?

Yes, Fender Supersonic 22 is a tube amplifier. Released in 2006, the all-tube amplifier became popular and is a favorite of many guitarists.

How Many Channels Does Fender Supersonic 22 Have?

Fender Supersonic 22 has 2 channels. Those are called “vintage” with two swappable voices, and, “burn”.

End Note

That’s all about Fender Supersonic problems

However, here’s an extra tip for you! Always try to keep gain low and adjust the volume accordingly. That way you will get better sound from Fender Supersonic 22.

Take care!

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