No radio sound after battery replacement

[Mpwood]

Replaced the battery in my 2001 E55 AMG and expected to get the word CODE on the radio screen but instead got a blank screen. Talked with dealer who advised that there is a fuse at the rear of the radio. Pulled radio, replaced fuse and "code" appeared but when code was entered screen came up normally, but no sound. Any ideas?

[babymog]

Did the battery cables get reversed? Seems odd that the fuse blew.

[Mpwood]

This sound system has an amplifier that also has its own fuse. Replaced it and now I have sound.

[clarkz712]

First things first always check fuses first