Hi there! I've got a PAL SNES 1-chip that wasn't turning on. Replaced the fuse and the voltage regulator. Now it powers on, but won't boot games. The only one i tried which almost boots is super sf2 but only the first screen with copyright info appears, then it stucks. I've managed to boot the test cartridge and it says the APU failed. In fact i can't hear any sound, neither on another test cartridge. Any solution?