Transformer burnt out

My Ring Pro was working fine for 3 years. Last Sunday the transformer burnt out. Checked wiring fine. Installed a new transformer, 16 V 30 VA. It burnt out again. Could it be the Pro Power Kit or Ring Doorbell defective? Help, please.

Hey @Ray88. Do you have the Doorbell Pro wired directly to the Transformer, or with a chime kit in the middle? What does your wiring look like on the back of the Pro, at the chime kit (if this is in the middle) and at the transformer? What type of transformer do you have, as well as what kind of chime kit, if applicable?