My tv has only one SCART-input, and I also want to connect my tv settop box. The solution was to tie the two SCART cables together with a rubber band and switch cables when I want to use Raspbmc or the tv. This solution works fine.
The only problem is that once every 1-2 weeks my SD card gets corrupted. I thought of a lot of reasons, and one is frequently disconnecting the SCART cable. I noticed that the big metal surrounding of the SCART connector is electronically charged when I accidently touch it. Maybe the sudden drop (or rise) in voltage can cause SD card corruption.
Could hot-plugging a SCART cable (and maybe sometimes accidently touching the connector) result in SD card corruption?