Absolutely a star, many thanks. I will try laterPins 1-2 +12V, pins 3-4 GND on the P1 connector.It smoked the board !!!Did not work 1 & 2 12v 3 & 4 gnd.
Left 1, 4 pins horizontal P1 right 4.Oh shit. You didn't reverse the pinout, did you?
Nothing in it, I will send it for repair blown a TI chip not sure what elseIt's numbered on the silkscreen.
If it makes you feel any better, we've all made this mistake sometime. I sure have. Hopefully you get it fixed.