Check the speakers and wiring by substituting a known good speaker and check the amp inputs and RCA cables. Also make sure that the input gain and other controls are set properly. If there's still no sound, the amp itself is probably defective.
i was driving down the road and the adio just shut off on my kvt911dvd. no noises or electrical...
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i was driving down the road and the adio just shut off on my kvt911dvd. no noises or electrical smells, it just quitely shut off. it still works fine and the video will still play just no sound. any suggestions