My garage door opener has a beam at the base which acts as a safety break to prevent the door from closing on something. The light diode on the left side shines onto a rflector on the right, which sends it back to complete a circuit. The beams have been moved, and I'm assuming they don't form a complete circuit anymore. I can't see the light so I don't know where the beam is shining. Problem is, the door now doesn't close.
Any suggestions on re-aligning the beam?