"scamman" wrote in
news:dd9d2dd5bac45019a46a27bb509d0d98@homerepairli ve.com:

Different problem an 80's chain drive stanley operates opens then
closes stays closed for sometime then opens by its self and the light
blinks till you close the door. It may stay down and it might go right
back up again after hitting the down limit? any ideas?


You can set it so that is stops a half inch or so before it touches the
garage floor. Then if/when it "burps" downward, it won't hit the floor and
set-off the reverse saftey switch. Otherwise, it's time for a new opener.
Stanley went out of business years ago.

Morvin