AS I stupidly found out after cleaning all my battery connections, it is certainly possible to reverse the pug in connector (power to battery holder) and get no power to the receiver! Duh. I ordered a new receiver and then found out that the problem was easily fixed by turning the connector around!
This is a design oversight I discovered on a recently purchased DF95. One contact on my battery holder was defective. I had spares from EMS. I made a new one and used the Futaba Male Connectors. These have a small flange and connect to the Female Connector one direction only. Maybe this could be addressed in future design updates? HTHS.