QUICK ANSWER
A garage door that won’t open after a power outage is usually fixed by checking the breaker, re-engaging the opener’s trolley, or re-syncing the remote — in that order. The power flickered during a Tooele windstorm, came back on, and now the door won’t budge. Nine times out of ten this is a two-minute fix you can do yourself. Here’s the order to check things, and when to call (801) 814-1053 if it’s something more.
1. Check the Breaker and the Outlet
Start at your electrical panel — an outage or the surge when power returns can trip the breaker feeding the garage. Find the circuit for the garage, flip it fully off, then back on. If that doesn’t do it, check the outlet the opener is plugged into directly: unplug the opener and plug in a phone charger or lamp to confirm the outlet actually has power. A surge during the outage can knock out a single outlet without tripping the main breaker.
2. Re-Engage the Opener’s Trolley
If anyone pulled the red emergency-release cord to open the door by hand during the outage, the opener is now mechanically disconnected from the door — power alone won’t fix that. With the door fully closed, pull the red handle toward the door (or follow the release instructions printed on your opener) to reconnect the trolley. Then run one complete open-and-close cycle using the wall-mounted button, not the remote, to confirm it’s properly re-engaged.
3. Re-Sync the Remote or Keypad
If the wall button works but the remote or keypad doesn’t, the remote has simply lost its pairing — a common side effect of a power event, not a sign of a bigger problem. Most openers re-pair by holding a “learn” button on the motor unit (usually near the light bulb) for a few seconds, then pressing the remote button you want to use, following your opener brand’s specific steps.
Opening the Door by Hand (Safely)
Only pull the emergency release when the door is fully closed — releasing it while the door is up can let it drop suddenly. Once released, lift the door straight up using both hands, evenly. If it slams down on its own, feels far heavier than usual, or won’t lift smoothly, stop — that points to a spring problem rather than a power issue, and it’s not safe to keep forcing it. See our opener repair page for more on opener troubleshooting.
Preventing This Next Time
Most newer openers offer a battery-backup option that keeps the door working through short outages — worth asking about if outages are common on your street. If you’re due for an opener replacement anyway, it’s a small upgrade that avoids this exact situation. See our opener repair & installation page.
If You’re Running a Generator
Most portable generators can run a garage door opener fine, but a cheap or undersized unit can send unstable power that confuses the opener’s control board just like a surge would. If the opener behaves oddly (lights flickering, remote not responding, motor humming without moving) while on generator power, try running the opener on its battery backup if it has one, or wait until utility power is restored rather than troubleshooting further on generator power — chasing a problem that’s actually just an unstable power source wastes time.
Frequently Asked Questions
Can a power surge damage my garage door opener?
It can, especially with lightning-related outages. If the opener shows no signs of power at all even after confirming the outlet works, the control board itself may need repair or replacement.
Where is the emergency release cord?
It hangs down from the trolley on the metal rail that runs from the opener motor to the top of the door — usually a red handle or cord.
My door still won’t move after trying all of this — what now?
Call us. At that point it’s likely an opener component or a mechanical issue unrelated to the power itself, and it’s worth having a professional take a look rather than guessing further.