w211 estate rf amp

[cmarkod]

Central locking and radio signal have gone. Still working on IR so I'm assuming is the RF amp. Can anyone tell me which fuse to check and where to locate amp if fuse is ok?
Cheers
Chris

 

[cmarkod]

Well finally located amp- off side corner of boot below window. Replaced fuse and the box started smouldering and melted the case! £200 later a new amp is installed and now radio and remote working fine!