[Ree]

When I switched on my PSU today, I noticed a tiny flash of light inside it (right at the moment I pressed the button, was barely visible through the vent at the back, if it happened during the daytime I probably wouldn't have noticed). Nothing burned, the PSU is fine, but I was wondering if it's normal.

P.S. Yeah, another post about "flashes", no, I'm fine, this one WAS real.

[4GHZ_or_bust]

What kind of flash? Like a camera flash bulb? Or like a guy wearing nothing but trench coat? :lol:

Seriously, it depends on the PSU but they probably used a relay of some type to turn on the power to main part of PSU when the power_on line is active (grounded instead of floating at 5v standby). You should try for a better look, does it look like it's flashing inside a rectangle box or do you see any actual arcing? PSU brand and model would help as well.

[Ree]

What kind of flash? Like a camera flash bulb?

Yeah, like a tiny camera flash (white light).

You should try for a better look, does it look like it's flashing inside a rectangle box or do you see any actual arcing?

No, no arcing. The flash seemed to come from the area behind the switch button (inside the PSU).

PSU brand and model would help as well.

Chieftec CFT-700-14C (Turbo series, 700W).