I have an R1, which is barely an R1 any more, but for what it may be worth I replaced both those fans almost from day one.
There are known problems with them.
Most likely they failed at different times and you just happened to notice them at the same time.
The one in the electronics enclosure is pretty easy to miss.
The original electronics enclosure fan is far too small for its intended purpose.
The way it is mounted (the "grille" through the enclosure material) and its airflow capacity are inadequate, as is the dinky exhaust port near the PSU.
As a result everything inside runs hot.
I installed an 80mm fan and exhaust port grille into the back cover of mine.
Now everything inside runs nice and cool.
Others on the forum have done similar things, I am hardly alone.
It is a known issue with the FT-5 enclosures and their fans.
You really should consider doing this.
As for the cooling fan on the hot end, it almost certainly is a sleeve bearing type if it came from FT.
Being thrashed around on the hot end it won't last long just because of that.
Sleeve bearings have one benefit only- they are cheap.
That's all folks.
They will start to make ugly noises as the bearings wear out and eventually they just won't start up.
Buy ball bearing replacements if you possibly can, and double ball bearing types if at all possible.
Do not buy "wave" or "vapor" bearing versions for hot end usage either.
Two thumbs up on the MeanWell 350-24 PSU.
I have been running a 240-24 in my printer for a long time now but I am also running an AC mains-heated print surface so my PSU load is much lower.
I have used MeanWell supplies in a number of designs at home and at work and I have very rarely had any issues with them.
FWIW... I hope it helps you..