Soap lid does not open

Dishwasher Repair
1

could you tell me why the soap lid does not open auto. when washing dishes , i have to do it manualy

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3

12/19/09
Maytag dishwasher Model# DWU8750AAX; Soap dispenser won’t open. Replaced 2 wax motors(902899) one releases the soap dipenser, the other releases the rinse-aid dispenser. Turned on the dishwasher, dispenser still won’t open.
Can you tell me what else could possibly be wrong?