PAL conversion on a 4000T isnt there just 1 jumper to move? same as a4k?
Yes, just move the J212 jumper from NTSC to PAL and that's it. And if needed, move the 110V/220V switch at the back of the AT power supply to 220V.
If exact PAL timing is required, remove the 28.63636MHz oscillator (NTSC) from Y154 and replace it with a 28.37516MHz oscillator (PAL). The oscillator is socketed on the A4000T boards.
I recall some video hardware (NTSC?) needed more accurate timing than what Alice can generate with the J212 and in this case also the oscillator needs to be swapped.
