I have a Super Famicom, Japanes Version no pal Version.....Ok Do you try to reset your sfc 2 or 3 times when you start the console.
And maybe the cic in the cartridge is burned.
Good luck.
If I understand, You have a pal snes with the superflash cartridge and the cic sold from tototek?
But The cic from tototek is a ntsc chip and you need a pal cic.
Just mod your snes to disable the ci ...