Bad caps but replacing them didn't fix the power supply

Hi, I had the same problem with bad caps on this power supply board.
I replaced all of the bad caps with new ones of the correct specs.
My problem is that the display still won't power on and I think there is still an issue with my power supply. If I take a reading on the voltage output pins on the 5V side it holds at about 4.8 to 4.9 volts which as far as I know should be fine. On the 12V side however it jumps all over from 8 on up to 11 volts. I am hoping that someone here might have an idea as to why my 12V...