We have a Cary MPR 50 microplate reader that is several years old but so far it's been working very well.
However, recently the plate tray would not move to the load position and seems to be stuck in reading position. The software does not recognise the problem - you can click move plate out/in but the equipment is not actually moving but is otherwise responding (eg. it does measurements). Do you maybe have any tips how to fix that problem?