anyone out there??

'Somebody' used a random 45v dc input when it should have been
12v.....guess what....now it wont work...The screen (orange) backlight
and (red) power l.e.d comes on...but thats all..
I've done the most basic thing by looking for an internal fuse,hoping
it could be that simple..
but cannot see any..
Can anyone please point me in the right direction?