My clarion cd player in my boat was working fine now it says amp grd. I have looked but i see nothing unhooked what can i do to get sound out of my speakers?

Remove all the speaker wires.

Power the radio back on and verify it is not the radio at fault.

If it powers up, check the speakers with a Digital Multimeter set to OHMS 20x.

Each speaker should have a resistance of 4 ohms. (or 8 in some cases)

Any variance (+/- .5ohms) means the voicecoil is blown, and replace that speaker.


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If it says amp grd you have a shorted speaker, speaker wire, or possible corrosion inside the deck, shorting out the output ic.