Had an Apollo running since August 2020.  Just recently tried to get the node synced.  It ran slow - even with mining off, took more than a week and repeatedly stopped and needed manual restart.  Was at 99.6x% and then overnight, I assume while finishing, the miner stopped working.  Just wouldn't even turn on.

Took it to a computer repair place (I'm in healthcare, not technically inclined).  They found "a cold spot" (?) but it's up and mining again.  

 I'd like to run a node out of principle, but don't want to zap the miner again. Was this a one-time bad luck thing or is it likely that the power pull from syncing will cause another issue?

Separately, is there any guidance on the maximum temperature for the system? The fan gets pretty loud on Balanced settings, but the temperature stays around 66° C. It's in a cool location where I don't mind if the fan makes a lot of noise so I would run it on Turbo settings if I can confirm what temp warrants cut off and going back to Balanced.