Hi.

I have accidentally crossed the loudspeaker wires coming out of my
Marantz 1150D under high volume. The fuse was broken. I tried to
replace it, but as soon as the power is switched on, the new fuse
brokes again. The power indicator flashes and then turn black again.

The fuse is a 4A, as requested on the back of the ampli and as it was
before.

What can I do?

Fran.