Lynx 455 Garage Door Openner - caught in loop

Hi, I have a Lynx 455 automatic garage door opener. When I opened it last night it got to the top of the run and immediately started down again. It got about 2 feet into the down cycle and started up again. It just kept going up and down in the same pattern until I pulled the plug. It is quite old and does not have any laser eyes or safeties. Any suggestions? Thanks Alex
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
abcnck wrote:

    The first thing I would do is to disconnect the opener from the door and see if the door moves freely. All openers (that I know of) reverse if they encounter what they think is excessive resistance.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.