Volvo CEM problem repair / water inside / v50/ s40

#v50 Hello. In this video you will see an example of diagnostics and repair of a common problem with CEM. Initially, the audio system and climate control did not work. The reason for this is the ingress of water into the CEM and the failure of three relays. To replace the relay, the CEM needs to be soldered into two halves and replace the relay, remove traces of water and solder back.