What sort of wear and tear might have I incurred from having my always-on desktop PC run without its two case fans for the last 2-3 months? Is there anything I should do to diagnose if there's a problem?
Today I noticed that the top of the case was rather hot. Apparently, when I last opened the case a few months ago, I didn't properly hook up the two case fans back to the appropriate power line. CPU and GPU coolers have been spinning fine.
Shutdown and opened up the case. The Corsair 550W power supply was very hot. Not hot enough to cause a 2nd degree burn, but I couldn't hold my hand on it for more than a few seconds. As a result of limited ventilation, everything else inside was hot including the hard drive. Perhaps around 110 - 140° F (43 -60° C). Motherboard cmos config screen indicates that the overheat protection settings are for 194° F (90° C). I suppose it never got that hot if it never shutdown on its own.
I let it cool down, sprayed the dust out of it, fixed the power to the fans, and started it back up. Everything back to normal. There are no perceived problems now, nor were there any issues during the months without the fans running. No more hot spots on the case. But it's a bit disconcerting to know that I was running hot for so long.