Gaggia Classic Pro - $200 (Ypsilanti)

Gaggia Classic Pro.
The water coming through the main group head/brew pump is limited, just trickles down, if at all.
The steamer seems to work as normal.
I believe there is scale/build up.
I was told by Gaggia that the solenoid valve is likely the culprit (the valve connected to the boiler).
I have no knowledge in taking things apart and I no longer drink coffee so…