Fenix 5x HR stopped working

Hi guys

So today for the second time my HR just stopped working. I have notice this after accidentally I scratched door handle on the way out of the room. Btw first time as far as I remember I hit it slightly as well and diodes doesn’t work and system displays that there is no HR at all. Funny thing because after first time it started working after couple of days. Is anyone of you had similar situation? Btw i rest it first time without any changes and restart device dozens of times without any result. Any one have/had similar experience? Watch have like 6 months now.