Testing HCS301 - Beninca Key Fob not working

[MarkH522]

Hi everyone,

Im looking some help with my Beninca  TO.GO-WV garage door opener. The keyfob stopped working for some reason and I'm trying to figure out why.

I have been looking at the HCS301 datasheet and can see that the PWM pin is TX out. I have been trying to power the keyfob and measure the output of this pin but it seems to constant around 9v regardless if I push the buttons or not.

Any Ideas how I would test if the HCS301 is working and sending the correct signal?

Thank you
Mark

[MathWizard]

So is it just a just a micro-controller w/ some RF output, and it runs off what ?, 1.5-3V

What sort of frequencies do they TX at ?

[geggi1]

First of all check that you got the correct voltage on the micro controller.
If the voltages are correct.
Try to jump over the buttons one by one to se if jou manage to activate the garage door.
If this is not working look for things like water damage, bad solders and broken traces.