After having a Garmin Chest strap stop working many times. I switch to a Wahoo one. Worked amazing well, had since last October. However in last few weeks been acting weird.
Getting wrong HRT readings. more less nothing above 100 HRT and i can push 190 at times.
I changed battery twice.
bought new battery from store.
i took good care of strap, rinsing it off every time i used it

I checked both my Garmin 500 and my Forerunner devices. thinking maybe those gave me the wrong reading, but those seem fine

anyone else have similar situation

any recommendation or suggestions on what else to do? thanks