Due to the virus, many customer events have been canceled. 
So the stage equipment is also kept in the warehouse and has not been used for a long time.
When used again, they found the following situations: the volume is extremely low, the sound is not full, the switch is not sensitive, noise, etc.

The general problem is that the machine is rusty.

If it is not used for a long time, the circuit board of your machine will be oxidized if it comes into contact with moisture and oxygen in the air. If the circuit board is used frequently, it will generate heat and evaporate the moisture on the surface

How to avoid this problem?
So seeing this, I think you should also understand, If you want the stage equipment to work well, you should use it for a period of time every month.
The same is true for people, if they don’t think often, they become dull. So we have to keep learning.
 

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