Hey Martin, Welcome @ the PL forums.
Did you measure the powersupplies output going to to the drivers ?
And what does it do when it shuts off (maybe the supplies drop).
It's strange that 2 sets are behaving like this, right ?
Did you check for earth problems ?
My green (the one i bought from you) i had placed in a projector and then had some issues.
Rob advised me to take the earth out of the scanners.
I recently put a blue in and had problems, now i connected the earth and low and behold: problem gone.
So maybe something is wrong with earthing or powersupply ?
Kind regards,
Dimitri
I didn't fail !
I just found out 10,000 ways that didn't work.