So I'm trying to convert a PSU to a bench supply unit, I found a ton of tutorials online and have followed the general guidelines of connecting the 5vsb to ground through an LED, connecting the power OK(grey) to ground through an LED and putting a switch between the green (power on) and ground, and adding a dummy load between 5v and ground. When I turn the unit on my standby LED lights up, but then when I turn on my switch to connect green to ground some weird things happen...
The power OK LED does not light up
The fan turns on for the PSU
The LED for the standby starts oscillating between dim and bright
I measure about 10V from the 12V line
When I replaced my dummy load with a lightbulb it also oscillates between bright and dim.
Have tried adding more dummy loads on the other rails but no improvement....
Any insight would be super cool