Marine Electronics Forum - Stereo / Amp Problem - Need Help

Hello

Let some friends use my tritoon (first mistake). They claim they played one song and then the stereo went out.

I have three amps and I am using a power distribution box. The power box is getting power from a wire with a 50 amp fuse - connected to (2) batteries wired parallel with a onboard charger that I plug in at my dock. This is all seperate from my battery that runs the motor and other electronics on the boat.

When I got to the boat all amps appeared to be fried (no power). I replaced the 50 amp fuse on the power supply line and the main amp started to smoke. Everything appears fried even the onboard charger is dead. What is also wierd is that the 20 amp relay on my main battery for the rest of the boat was also tripped. Not sure if my friends tripped that while trying to get the amps back working or not.

Trying to figure out what the heck happened. Maybe they did not unplug the onboard charger before cranking the radio up?? Not sure what happened but trying to sort it out.

Any thoughts??

does your battery charger go to both battery banks? sounds like it could have been the charger had an internal problem not regulating voltage which would allow it to get past the 50 amp fuse but would fry the componenets of a 12v amp. then if they unplugged it from the charger the amps were probably shorted at that point and would trip the breaker. Did the amp holders look like they melted at all? Also what kind of sissy amps are you using that 3 of them can be powered with 1 50 amp wire?