I just wanted to return here to my first post and say thank you for your kind help. I started not so long ago with my childhood SMS that had power cable troubles. With your help and patience I fixed that and now I have modded the console (AV, PAL/NTSC switch) and built an arcade stick for it into a coffee table. It is nothing much, but for me it is a childhood dream coming true (the arcade stick part..). So thank you all.