Lanier p-155 won't turn on

Some times the battery contact need to be pulled out a little bit. they are located down inside the battery compartment. You can stick a small screwdriver under the battery contact and bend it upward for better contact. If that doesn't work try removing the back cover and tightening the grounding screw, which is a silver screw located by the motor pulley hole. Sometimes this screw loosens up and then the ground is lost to the entire unit