On Sep 20, 10:05 am, dpb wrote:
twonkie wrote:

...

Thanks Bo! I'll try bypassing them or moving them right next to each
other. I'll post the results. Thanks again.

If it moves, they're aligned well enough. Unless there's something
breaking the beam intermittently, it's highly unlikely from the
described symptoms they're the problem.

Sounds more like intermittent electrical contact somewhere to me...

I'd be looking at all connections, limit switches, motor connections,
etc., etc., ...

How does it operate if disconnect the door and simply actuate the closer
mechanism? If it does the same, it's electrical/controls. If it
operates normally, it's mechanical.

--

When I disconnect the door it acts the same way, It's almost like a
capacitor is discharging too quickly IMO.

That's what I was thinking. I think I'm going to call Chamberlain
tomorrow when I'm standing in front of the opener.

Thanks dpb!