- A common car amplifier problem is when it fails to power on. A repair for this is often to establish a secure ground wire connection, which should be attached at all times to clean, bare metal. Power problems can also be the result of fried components that can be physically viewed when opening up the amp.
- Sometimes an auto amplifier will have problems with overheating, and will shut itself down as a result. This can often be fixed by adjusting gain levels. External cooling fans can also be added to an amplifier to cope with overheating issues.
- When an auto amplifier causes speakers to create a whine type of noise, this too can be the result of a bad ground wire connection. A noise suppressor can also be acquired to deal with unwanted speaker noise.