New
#21
MCleveland have you even tired the volts on the PSU?? if not then try these
PSU - Jump Start
then
https://www.sevenforums.com/vip/257690-psu-how-test.html#post2130086
Take particular note of the volts at the grey or gray pin see this Voltage Rails - Power Supply 101: A Reference Of Specifications scroll down to the Power good text and have a read .
Just a WARNING mate don't try to get inside the PSU I know I am probably telling my grandmother how to suck eggs but I feel the need to say it.