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That's usually the first thing I try (because it's the cheapest fix) and then I'd start a bit more detailed debugging. I can't remember the specifics on this machine so it might not have a 3-way solenoid but if it does you could try backflushing with pullycaf to see if this makes any difference to the wand waterflow. If it does then it might be the 3-way clogged with scale or coffee.
But the cheaper Gaggias don't have a 3-way so check first.
"Gaggia Classic Pro: How to Clean 3 Way Solenoid Valve
If NO WATER comes out of the steam arm, and NO WATER comes through the group head, but you DO get water out of the decompression duct (the pipe on the front of the machine) then it is time to replace the solenoid valve."
hippy-
Ah vince had done a few upgrades to the machine, the solenoid being one
"I have slowly upgraded over the last past 4 years with all the "good" mods:
-Gaggia Bottomless (Naked) Portafilter 21g Black Handle £37.08 (makes nice Instagram shots)
-Rancilio Silvia steam wand conversion £13.95 (improved steaming action)Gaggia Brass Shower Plate Holder 57x14mm - WGA16G1002 £19.92 (adds thermal mass)
MS Gaggia Precision Shower Screen ø 55mm - GA200IM £17.04 (improved flow, easier to clean and less residue when backflushing)
Gaggia Classic Olab 3 Way Solenoid Valve 230v - DM1645/001 £58.56 (prevents the solenoid issues)"Ill try descaling a report back.
Water flows through the wand fine with no difference than before.
The machine was manufactured in 2006 and I love that its still going so really keen to keep it running
TotalShanner
Aye thats a fair point actually. I've just ordered some descaler so will give it a try.
The steam wand seemed to go a bit suddenly, was fine one day then fucked the next.
But it hasn't been descaled since I bought it which must be close to two years now...