Sounds like what happened to mine a while ago. I just bought a replacement motor from eBay (they are fairly cheap) and it works fine now.
Will look into.
In the meantime; removed the grouphead cleaned it and before putting it back tried the machine again .. still suppressed (than usual) noise and nothing .. hot water/steam runs fine through the wand.
@amey started
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Sounds like what happened to mine a while ago. I just bought a replacement motor from eBay (they are fairly cheap) and it works fine now.