ok:
-my amiga works without blizzy. (works even with Apollo1240)
-I`ve already cleaned all connectors i`ve found
-I have no BVision
-I tried to boot with "2" pressed, but did not succeeded (blank screen), but I`ll try again.
-thanks to StormLord.
-if everything fails, I`ll try to contact ARC France, as I already did with Elbox (they said they may try, but no promises).
-i`ll put a small radiator onto flash ROM

StormLord: to verify: if i disable Blizzy ROM ("2"), the 040 propably will stay on (i think it`s connected directly to mobo registers), so no 020 will be used for flashing, but I know, the flashing process without FastRAM is reaaaaaaaaly slow...
On my blizzy it stayed on when there was my previous problem (flash corrupted and no blizzy found in system, but system worked...). there was only 040 visible from all the blizzard.
I`ll thank you when I manage to repair Blizzy myself...
(if ARC France repair, I`ll thank you too;)