Welcome Nb_99,
We understand that you have two Apple TVs that won't power on after a recent power surge. We'll do our best to assist with this.
You came from the best resource for the issue: If your Apple TV doesn't turn on - Apple Support
In addition, we'd recommend the following related steps:
- Test another power outlet.
- Test another power cable.
- Complete all steps again: If your Apple TV doesn't turn on - Apple Support
If you still can't get them powered on, then it would be best to bring them in for an inspection: Apple TV Service & Repair - Apple Support
To be prepared, visit a local Apple Authorized Service Provider or Apple Store: Locate - Apple
Bring the Apple TV(s), original receipts, and a photo ID to your appointment.
Wishing you well, cheers.