Sanyo SR-290- Freezer freezes up, Lower no cool

Brand: Sanyo
Model Number: SR-290
Main Symptom: Freezer over freezes, Lower not cooling.
What happens & when: Temp Ctrl at max, med or min- No change after left off and open 12hrs. Unit appears to have a separate lower evaporator tapped from freezer evaporator. No service information available except parts list. Temp Ctrl will shut off compressor at varying temps and settings according freezer temp.

Error Code (if any):
Parts or tests already tried:
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