Heidelberg Printmaster 46-2 Air leaking problem

Hello, I have an error and air is leaking from the valve. See photos posted.

Is there a simple fix, like a fuse or is it a valve that is broken?

Thanks

 

the air is leaking from the grey tube on the bottom left of the photo

 

Take off y19 solenoid and clean the valve inside, it is getting dirty so the pin can not move freely

 

Tried that , cleaned everything.. i can see there is no 12v going to the solenoid valve. I have cleaned the inside of preassure gauge. Is there are manual fix to get a urgent job dond

 

The other solenoid valve that comes from the airpump is working.. also i see no power to the black box next to it, neumatic control system