Why won't my garage door close but it opens fine?

That pattern almost always points to the safety sensor circuit. The opener only requires the sensors for closing, so a blocked, misaligned or faulty photo-eye stops the door from going down while leaving opening unaffected.

Can I bypass the safety sensors?

No. They are a required safety feature and disabling them removes the protection that stops the door on an obstruction. The fault should be repaired instead.

Why do my sensors only fail on sunny afternoons?

Direct low-angle sunlight on the receiving eye can overwhelm the infrared beam. Repositioning or shielding the sensor usually resolves it.

Salem, Oregon & surrounding areas

Garage Door Sensor Repair in Salem, OR

Photo-eye sensors sit a few inches off the floor on each side of the opening and stop the door from closing on a person, pet or vehicle. When they fault, the door refuses to close — which is inconvenient, but the system is doing exactly what it should.

We diagnose and repair sensor faults across Salem, from simple realignment to replacing damaged eyes and repairing the low-voltage wiring that feeds them.

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Why safety sensors stop working

Misalignment

A bumped bracket is the most common cause. The two eyes must face each other precisely; a few degrees is enough to break the beam.

Dirty or fogged lenses

Dust, cobwebs and condensation — plentiful in a Willamette Valley winter — block the infrared beam even when alignment is perfect.

Damaged wiring

Staples through the low-voltage wire, rodent damage and corroded connections interrupt the circuit intermittently, which makes the fault hard to pin down.

Sun glare

Low afternoon sun striking the receiving eye can wash out the beam and cause reversals only at certain times of day.

Failed sensor or logic board

When alignment, lenses and wiring all check out, the sensor itself or the opener's control board may have failed and needs replacement.

Signs of a sensor fault

The door closes only while you hold the wall button down
One sensor LED is off or blinking steadily
The door starts down, then reverses to fully open
The opener light flashes several times when you press close
The problem only happens at certain times of day

Why sensor repair matters

Restores the safety feature that protects children, pets and vehicles
Ends the daily frustration of holding the wall button
Finds intermittent wiring faults instead of guessing
Verified with an actual obstruction test before we leave
Often a quick, low-cost repair

How we repair sensor problems

01
Verify the fault
We confirm whether the reversal is sensor-driven or caused by force settings or binding door hardware.
02
Check alignment and lenses
Brackets are secured, eyes realigned and lenses cleaned, then the beam indicator is verified.
03
Test the circuit
We test the low-voltage wiring end to end and repair breaks, damaged staples and corroded terminals.
04
Replace and re-test
Failed sensors are replaced with compatible units, then the safety reversal is tested with an object on the floor.