Yep, mine's dead too!! Funny how they fail shortly outside of warranty!!
I've done hard reset and tried different outlets, even checked the plug to make sure it wasn't loose on the housing.
Same issue! Mine stopped working as well. Tried different outlets and also tried bending the springs up a little thinking it's not making contact with the removeable power plug. No luck. It's definitely something internal. I gave up troubleshooting it and bought a Gen 2 Chime Pro. A little upset about having to do so.
RING must have built in obsolecnce. My RING 1 video doorbell unit quit working and so did the wireless chime (no blue light or any indication of receiving power) - both about the same time. Just bought a RING 3 and going to buy a new chime as well. If I can get a year out of the new units I'll be happy because it will buy me time to install an old fashioned wired system and some other brand of camera at my door.
This is a known issue by Ring chime pro but they don't want to help you its a blown capacitor easy fix but they want you to spend more money to buy their new gen 2 version not going to do it.