I have owned my Quest for little more than a year.
In that time I have already had three controllers fail on me. I use them very carefully so I was mystified (and of course very disappointed) as to why they kept breaking.
Then I saw this reddit post of a user who performed a teardown of two separate defective controllers and found that on both controlelrs some of the the internal IR LEDs had been corroded and broken by sweat.
I am extremely confident that my issue was exactly the same - WHile I was unable to perform a teardown as i didn't want to void my warranty , my controllers exhibited the exact same flaw each time they failed.
I towel off regularly and wear sweatbands, but it is naturally impossible to exercise well and fully keep any sweat from getting on controllers, especially when you live in a hot country.
Oculus sells the product with exercise in mind - these controllers really should not break so very easily due to sweat damage.
Now that I know sweat is causing these issues I will try even more assiduously to keep the controllers sweat free from now on. However,it would not be technologically complicated to make controllers such as these which are genuinely sweat-proof.
I am now going to have to play wearing plastic gloves - that is a very silly and disappointing situation for what is meant to be a fuss-free VR solution.
Can anybody kindly look into this and restore my faith in Oculus products going forward +/ explain how they would have me use Oculus devices for active games like Beat Saber without the controllers breaking!