Uh, are you ok there +12V bus?pic.twitter.com/qV9BRAJfL9
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Bad caps maybe? Or it might have an unregulated 12V rail that is drifting relative to whatever rails they do regulate...
A 10 year old PSU is prime for replacement. I'd still visually inspect all the caps to avoid any unpleasant surprise
Sure, at that age it's prudent, but knowing the root cause of the drift would still be interesting.
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