Found that compressor was good and attempted to troubleshoot other potential problems. Once the controller apparently cleared itself and freezer came on but, when the door was opened the inside light and the compressor would short cycle, finally it quit again.
Appliance Parts Pros.com website has good information or repairs and possible problems. I ask a question and they provided me with a quick reply on potential fix for the Frigidaire upright freezer model LFFH21F7HWA . The new electronic control board part# 297366300 resolved the problem and was installed in the door in less than 5 minutes by using two stiff putty knives to disengage the unit from the door.