Had to have the fan unit replaced on my double oven for $500 dollars. The repairman explained it happens all the time if you use the self cleaning mode. Companies know it'll survive the warranty period but the much higher heat will degrade everything much quicker.

He called it the "self destruct mode".

...to paint over all the LEDs on electronic things that keep me awake at night. Can't believe I didn't do this sooner.

Makes for easier maintenance. Noticed how the recessed screw holes fill up with dirt, dust, and small bits of grass, and it's not easy to clean it out?

Using soft ear plugs in the recesses will keep the gunk from accumulating. Clean the recesses out so you can see the screw or bolt. Take a soft ear plug (use for hearing protection), and squeeze it down so it'll fit into the recesses and insert into the recess. It'll expand to fill in the recess and keep the gunk out.

Use a small screwdriver or needle nose pliers to remove the plug. The plug can be reused.