Well, my replacement R100 v3 from Fender has quit working. Flashing red LEDs, no sound (though thumps in time with flashes come from an amp slaved via send/return). So, I’ll contact Fender about a warranty repair or another warranty replacement.
Meanwhile, the R100 v3 I bought used several years ago keeps plugging away.
Meanwhile, the R100 v3 I bought used several years ago keeps plugging away.

I didn't even know my 2015 200cV3 had a fan 'til read about them in Rumble Club.