Ok i have the same set here is what i did. I removed the rear panel,
Removed any wired connections from the power supply all of them,
On the solder side of the board look for a tiny fuse is should be white in color reads (F2) tested with a digital meter is a must check for continuity if you here your meter beep contantly it is good.
Next check all of the capacitors top part for any bubbled capacitors.
Once all has been checked donnot connected wait awhile.
Now remove the main board that's under the metal casing you,ll see (Carefully)
Now on the Main Board disconnect all wired harness On that main board solder side use a magnifying glass and look for broken solder connections if you know what to look for you will find them resolder the points if found if some are questionable solder them too (DONE)
Next you notice the back plastic panel has no vent holes by the power supply that is one of the worst designs i,ve seen getting back to the rear plastic panel you need to create a grid with a pencil and a ruler and mesure 1/2" apart mark your lines and use a 1/4" on the side where the power supply is drill bit and drill away on the panel from outside in. be precise on drilling so it looks professional must have atleast 250 holes once done. Now you have created a nice Vent for your power supply to release heat. Mount everything back make sure all of your connection are connected correctly You are DONE I did it to mine and never had a problem