I have a Midea 50PS1WS Dehumidifier with a bad defrost sensor or humidity panel. Coil freezing over after a few hours. Plenty of ventilation, fan working fine etc. Tried to access the interior of unit and cannot get any of the panels offer to get access. Took all screws out and see where there are clips but cannot release. Any help would be appreciated. Cost minimum $150 to have tech repair and orig cost $200. See if we can get this done. Any insight on repairing would be great once I get inside.

I have a Midea 50PS1WS Dehumidifier with a bad defrost sensor or humidity panel. Coil freezing over after a few hours. Plenty of ventilation, fan working fine etc. Tried to access the interior of unit and cannot get any of the panels offer to get access. Took all screws out and see where there are clips but cannot release. Any help would be appreciated. Cost minimum $150 to have tech repair and orig cost $200. See if we can get this done. Any insight on repairing would be great once I get inside.