Electric hoist control switch unresponsive how do

Electric hoist control switch unresponsive how do
hoist equipment even if minor problems could also lead to substantial danger, they must be on prevention, at the same time, some of the basic solution to the problem should be more understanding.
Such as  wire rope hoist  ontrol switch unresponsive cases, measures should be taken to solve it?
1 The easiest solution may be a situation there is no power, with the test pencil test whether electricity, if not pass, you only need to power.
2 internal power of the lift hoist brake switch short circuit or bad contact, because the circuit is blocked, so professional electrician overhaul may take a long time, do a good job before the test.
3 Power supply voltage is low, does not reach the rated voltage, the motor power is not enough running. In this case, you only need to ensure that the voltage is normal.