Garage Door Won’t Open or Close? Emergency Troubleshooting for Kensington Homeowners

A garage door that suddenly won’t move is more than an inconvenience — for most Kensington homes it’s the main way in and out, and a door stuck open leaves the house exposed. Before you call anyone, there are a few safe checks worth two minutes. There are also clear signs that mean stop, don’t touch it, and get a professional out today. This guide walks through both, in the order a technician would think through them, so you can either solve a small problem yourself or recognize quickly when it’s time to call.

Start here: is the door balanced?

One quick test tells a technician more than almost anything else. With the door closed, pull the manual release cord (the red handle) to disconnect the opener, then lift the door by hand about halfway and let go. A healthy, balanced door will stay roughly in place. If it slams down or flies up, the spring system is out of balance — and that points to a spring or counterbalance problem you should not try to fix yourself. If it lifts smoothly and holds, the door itself is probably fine and you’re likely dealing with an opener, sensor, or power issue, which is much more DIY-friendly. Re-engage the opener by pulling the cord toward the door or running the opener until it re-latches.

Safe things you can check yourself

None of these involve the spring, cables, or high-tension parts — those are off-limits (more on that below). But these common culprits are safe to rule out:

• The remote or keypad battery. A door that ignores the remote but works on the wall button usually just needs a fresh battery. It’s the single most common “it’s broken” that isn’t.
• The wall button and lock feature. Many openers have a “vacation lock” or lock button that disables the remotes. If someone pressed it, the remotes go dead while the wall unit still works.
• The power. Check that the opener is plugged in and the outlet has power — a tripped GFCI or breaker takes the whole opener offline, and it’s easy to miss.
• The photo-eye sensors. If the door closes a foot and reverses, or won’t close at all, the safety sensors near the floor on each side may be misaligned or blocked. Gently wipe the lenses and make sure they face each other with a steady (not blinking) light. A stray leaf, cobweb, spider web, or bumped bracket is often all it is.
• The manual lock. Some doors have a physical slide lock on the track. If it’s engaged, the door won’t open even though everything else looks fine.
• The travel limits and force settings — visually only. If the door reverses before or after fully closing, the opener’s limit settings may have drifted, but leave the actual adjustment to a technician unless you’re confident.

If one of those solves it, you’ve saved a service call. If not — and especially if you see or hear any of the signs below — stop.

Signs it’s an emergency (stop and call)

• A loud bang followed by a dead door. That’s almost always a broken torsion spring. Do not try to lift the door.
• The door hangs crooked, or a cable has come loose or frayed. A snapped or off-track cable puts the whole door under unpredictable load.
• The door came off its track after being bumped by a vehicle or from a roller failure.
• The door won’t close and won’t secure, leaving the garage — and often an interior door to the home — open.
• The door is partly open and won’t budge in either direction.
• Visible bending in the track or a panel that’s binding the door.

In these cases the door is either under dangerous tension or your home is left unsecured — both are same-day situations. Based on company records, Neighborhood Garage Door Of Rockville reaches roughly 90% of emergency calls the same day, and being Rockville-based puts Kensington inside that same-day radius.

What a technician checks that you can’t

When a pro arrives, the diagnosis goes beyond the quick checks above: measuring the door’s balance and travel, inspecting the springs for gaps and fatigue, checking cable condition at the drums, testing the safety reverse and photo-eye response, and looking at rollers, hinges, and track alignment. Many “won’t open” calls turn out to be a combination — a worn spring that finally let go and took a cable with it, for instance. That’s why an on-site look produces an exact answer where phone guesses can’t.

Why Kensington sees these calls

A lot of Kensington’s housing stock is established, mid-century homes, and many still run their original springs and cables. That hardware has a finite cycle life — every open-and-close counts — and once it’s decades in, it fails suddenly rather than gradually. Add the DC-area’s winter cold snaps, which make brittle steel springs snap on the coldest mornings, and you get a predictable pattern of “it worked yesterday, now it’s dead” calls, concentrated in the colder months.

What NOT to do

• Don’t force a stuck door open. If a spring or cable has failed, the door’s counterbalance is gone and it can slam.
• Don’t disconnect the opener and yank the door if you don’t know why it stopped — you may be fighting a broken spring.
• Don’t try to adjust or “fix” the spring or cables. These are the parts that cause serious injuries. This is the line between DIY and a pro, every time.

When it can wait until tomorrow

If the door still opens and closes safely and the issue is cosmetic or minor — a noisy roller, a remote acting up, a small dent — you can book a normal daytime visit instead of an after-hours call. The repair is the same and the scheduling is easier on you and your budget.

FAQ

My garage door won’t open but the motor runs — what’s wrong? If the opener motor runs but the door doesn’t move, the trolley may be in manual-release mode, or a spring or cable has failed so the opener can’t lift the weight. Check the release cord first; if the door is heavy or won’t lift by hand, call a professional.

The door reverses right after touching the floor — is that an emergency? Usually not. That’s typically a safety sensor or limit-setting issue. Clean and realign the photo eyes first. If it persists, book a normal service visit.

Is a door that won’t close an emergency? Often yes, because it can leave your home unsecured overnight. Try clearing and realigning the sensors; if it still won’t close, call for same-day service and don’t leave valuables in the garage.

Can I just disconnect the opener and use the door manually? Only if the door is balanced. If it lifts smoothly by hand and holds, manual use is fine temporarily. If it’s heavy or slams, the spring has failed — don’t operate it, and call for service.

Where to next: if it’s an emergency, here’s how fast we can reach Kensington, or learn about our garage door repair service.

Published July 2026 · Neighborhood Garage Door Of Rockville · Serving Kensington & southeast Montgomery County, MD