PSU Problem...?

[FugBucker]

Hi, a 3D newbie here. Spent the last two days assembling my Prusa i3 Acrylic. Powered it up and only get a red on off switch. I can here the PSU buzzing but there's no DC coming out. Tested with multi tester and it's dead. I imagine the green LED would light up as well. Have it set at 220 and even opened it and flicked the switch back and for to 110 a couple of times...

Connected a USB and board fires up.... Hope it's something simple...?

[zhangxueyou]

Hi , could you please take some pictures of the wiring of PSU's back side and wiring of mainboard?

[FugBucker]

Thank you for the reply but I got it working.

It worked unmounted from the printer but when I tightened it up it stopped working.

I loosened it until it worked. It must have been squeezing the two boards together too much....