Radio Amplifier

[Judee]

Hi, I have a 2007 Sea Ray SD240 with a EAA046B amp and My 40amp fuse blows immediately upon battery power. Any thoughts on if my Amp is bad or obviously a direct short. All my wires are in good shape and the original clarion CMD4 powers on. Thanks for any input.

 

[Stee6043]

Did you check your manual to confirm that a 40A fuse is what's intended for the amp? I'd start there perhaps. You can get the electrical schematics from Searay.com.

 

[Judee]

Thank you, as far as i know even the previous owner my friend, said it used to work. I could see a smaller fuse blowing but a 40 amp is unusual unless there is a direct short or just a blown amp. And yes, the schematics say 40 amp. I may just get an electrician to check the voltage, I was just reaching out for thoughts as i am not good with boat electrics.

 

[techmitch]

Remove and isolate the large power wire that powers the amp. If it still blows the fuse, the circuit is shorted to ground. If it doesn't the amp is probably shot.