Does anybody have much experience or parts for the old Beckett controllers. We are getting an output from the main board that picks the OS relay (out of service) . The car will run on inspection and knows where it is in the hoistway but as soon as you lick it on auto it levels in and opens the door and picks this relay.

Sorry it is not OS it is SS relay

what model of controller is it? speed ? year?

It is model# 87 BE 2 so I would assume the year is 87 and the speed I think is 350
The MVS card is rev2
It keeps losing its position and we have to reteach the hoistway every couple of weeks

have you checked all of your power supplies to make sure the DC is clean? Pm me. i have some documentation that may help.