After 1 yr + 1 month - doorbell dies; out of warranty

Great security for 1 year, but for no apparent reason, the Eufy doorbell conveninently powers off after the warranty period. I can’t afford to buy and new one, every year. I expect these units to last 5+years. I have whole house surge protection and 19.2v transformer…within 18-24v range. There’s no damage to unit and door is hidden from direct snow, sun, rain and wind; looks brand new and beautiful.
it’s not like i installed it the day I received it…probably installed it about a month later as, i had to come up with a wooden base to compensate for the 90 degree turn needed as doorbell is located on adjoining wall.
what can be done? need help…thx in advance.