Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty. Please check impedance on speakers as they coyld be fried as well.
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Check speakers and wiring to and from speakers for shorts with a meter. You have done damage to the protection circuitry more than likely. Check the impedance at the speaker for proper level and check speaker wire for shorts from amp to speaker. If you still have a problem, post a comment and I will help you firther.
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