Samsung Tab S2 microUSB OTG stopped working

[eltho]

Hi all,

My Samsung Galaxy Tab S2 doesn't see my OTG-devices anymore. I can still charge, so I guess the micro USB port is still ok, but when I connect my external card reader or HDD, it doesn't see it. Everything worked fine until a couple of says ago, I don't know what changed...

Who knows what to do? I don't want to root it, because it's still pretty new and I want to keep my warranty...

Thanks!

Android 6.0.1
Kernel 3.10.84-9829844