Jimmy, I'm not familiar with your unit but I am familiar with your problem. As I understand it, you have lost power to 3 of your 4 electrical
The first thing I would check would be the breakers/fuses. With the power turned off, turn each breaker off and then on again. Pull each fuse and check it. Replace fuses as necessary.
Have someone else connect power to your unit while you watch the breakers/fuses to see if any of them trip, which will indicate the problem circuit. Trace the circuit downstream of any tripped fuses/breakers.
If no fuses/breakers trip, use a test light
to check each fuse/breaker for power. If no power to one or more fuses/breakers, trace the circuit upstream to find the source of the problem.
As one of your 4 receptacles is still live, this should identify your problem.