11-18-2015, 09:23 PM
RAMd®d wrote:
My money is on the video chipset.
I have a similar problem with my 2010 mini.
There are far more artifacts, though intermittent and not very frequent.
Moving the cursor cuts a swath through the artifacts, as does moving a window. This seems to be a result of the mini getting too warm and triggering a defective component (chip, cap?)
If I use iSTST to turn the fan on from Default to Medium, I sometimes see the temperature drop. I have another app to install that gives more control to the fan(s) in Macs.
I *had* a problem when using my 2012 mini to watch a TWIT Live podcast. There was some kind of chroma artifact combined with a slight dimming *only* in the video within the browser, after viewing for about 4s. If I moved the cursor anywhere on the screen, the artifact vanished, and the video brightness returned to normal.
The next time I watched the podcast, I didn't even notice that the problem stopped. I would have assumes it was at TWiT's end, except for the cursor momentarily clearing things up. But it hasn't surfaced again, in over a month.
It's probably not a temperature related thing in the 2012 Minis as I occasionally run Handbrake encodes and I don't see any video problems during those when the processor is at 99°C for a few hours.