The likely cause of this issue is overheating, overcurrent, overvoltage, a fault in the power system, a blown amplifier, a blown output channel or a blown fuse. 

Why is my amp getting power but not working?

If the ground connection is poor or isn’t connected at all, the amp might fail to turn on or not work very well. If the amp has good power and ground, the remote wire has voltage when the head unit is turned on, and no fuses are blown, then you’re probably dealing with a busted amplifier.
 

Why is my guitar not coming through my amp?

The most common issue is that the guitar is not properly plugged into the amplifier. Make sure that the guitar is plugged into the amplifier securely. Another possibility is that the amplifier is not turned on. Be sure to check that the amplifier is turned on and that the volume is turned up.
 

Why is my amp getting power but no sound to sub?

Step 1: Make sure that the amplifier is properly plugged in, and the power indicator is on. Step 2: Check if all the inputs to the amplifier are correct and tightly plugged in. Moreover, inspect the RAC cables if they are connected properly. Step 3: Every amplifier has certain voltage requirements.
 

Why am I getting voltage but no amps?

The most common cause of no amperage is a bad contact somewhere between the rectifier and the load. This can be in the buswork, at the saddle, or even where the anodes sit on the bar. To determine if this is the case, measure the voltage between the load and the anode bar.
 

How can you tell if an amp is blown?

How do you diagnose an amplifier? Test the sound by unplugging the sound cables or colored RCA wires. Hissing and crackling are often easy to fix by rearranging the wires or getting complimentary speakers. If the noise doesn’t stop, then you probably have a faulty amp to replace.

What happens if an amp is not grounded?

Turning your system up creates a demand from the amplifier for more current. Without a good ground, your system cannot create this current, which creates clipping issues with the amplifier. Properly grounded systems help stabilize voltage levels.
 

How do I reset my amplifier?

Quote from video: Using a tool such as a paperclip carefully insert the tool into the hole until you feel the button press down slightly keeping. This button press turn on power to the amplifier.

How do you fix an amp that won’t turn on?

Quote from video: Won't power on check the ground wire make sure there is no rust or dirt on the metal area the ground wire is connected to make sure the connection is a hundred percent secure and tight.

How do I know if my amp fuse is blown?

Remove the fuse from its holder. In some cases you may need a small screwdriver to unscrew the fuse holder cap. Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.

How can you tell if an amp is burned out?

When an amplifier is burning out it will begin to overheat, turn off, and stop producing audio randomly. You can sometimes temporarily fix things by making sure it has good ventilation to remove heat.