Brought a new ring doorbell and transformer burn up

I brought a new ring pro and the new 16v-30ve transformer from home depot and it worked for about a hr and both burned up and stop working

Took them back and got 2 new ones again and it did it again

We had adt for years without a problem and now we yave burned up 2 rings and transformer

Hi @Jackm. Do you have the Pro Power Kit installed? What type of chime kit are you using in your Doorbell circuit. I recommend using the transformer from, as it is of known good quality and compatibility. You ca find that transformer here.