What should I do if I'm getting no sound output from my amplifier?

First, ensure the power cable is securely connected and the outlet is active. Then increase your Gain, Volume, and Master controls as they may be set to zero. Try using a different instrument cable to rule out a faulty cable, and check that all connections are secure. If the problem persists after these steps, contact qualified service personnel as there may be damage to the speaker or internal components.