Take a battery, 9 volts or less, and momentarily touch its poles to the positive and negative wires of a speaker. If the wires and speaker are good, you will hear the speaker click. Test all the speakers this way. If all the speakers click, it means the amplifier has a problem and probably needs to go in for servicing.
How do you diagnose a bad car amplifier?
Car Amplifier Troubleshooting Guide – Common Amplifier Issues
- Amplifier Doesn’t Power On.
- Protection Light Comes On.
- Amplifier Has No Output.
- Clipping Amplifiers.
- Subwoofer Slaps or Pops.
- Crackling, Hissing, Background Noise or Distortion.
- Engine Wine.
- Overheating Car Radios.
Why is my amp on but no sound?
If the car amp has power but not sound in the amps, you can check its input connected to the head unit. Check the RCA cables that connect the amp to the head unit. … To test your amp, hook the test sub to all the channels in your amp one after the other. This should reveal any issues with the output.
Why would my amp not be getting power?
If the Amp Doesn’t Power On at All
To turn on, the amp needs power at both the remote and power wires, in addition to a good ground. If the remote turn-on wire doesn’t have power, your amp won’t turn on. … If it doesn’t, check for any inline fuses and verify that the wire isn’t loose, corroded, or shorted out somewhere.
How do you test a power amplifier?
Insert the Test CD into the source unit. With the A.C. Voltmeter set to ~ AC VOLTS, in a range of 10 to 100 Volts, connect the voltmeter (+) test lead to a single channel of the amplifier (+) output. Connect the voltmeter (-) test lead to the same amplifier channel’s (-) terminal.
What is the cause of distorted sound in amplifier?
Distortion of the output signal waveform may occur because: … The input signal may be too large, causing the amplifiers transistors to be limited by the supply voltage. The amplification may not be a linear signal over the entire frequency range of inputs.
What does a blown amp sound like?
The most common aural indication of a blown speaker is an unpleasant buzzing or scratching sound, by itself or roughly at the pitch of the note the speaker is attempting to reproduce. Or there could be no sound at all.
Will amp turn on if fuse is blown?
If the fuse is present and blown, the amp can’t turn on because the circuit providing mains voltage is open. Simply replacing the fuse may or may not solve the problem.