again i've broken my a121 vcf 2 multimode filter by connecting the +-12v the wrong way.
last time i had it repaired and they putted a new cem 3320 inside.
so can i repair this myself by just putting a new cem 3320 or is it more than that
are these chips easy to find

this time also my a119 ext input was connected wrong, any idea how this can be repaired

thanks for the help! floris