It seems like there is another problem/bug with the v12 pstwos.
i saw 3 cases of dead DVD diode insted of dead coils!!!! in all 3 cases it happend regardless the mechanics controller crash.
two i saw in my eyes while using BAD SCRATCH TDK DVD-R. it happend instently while using this bad dvd-r.
when messuring the dvd and cd pots i found out that thay fixed on a very low resistence in all v12 consoles, and also find out that if u get them to high resistence thay continue to perform very good!!! so maby there is a need to also add resistence to the dvd cirquit and by that reducing the current to it!!!
i'll do some testing on my next install