Hi Snobs,

I'm having this humming sound issue with my silvia v3 (not my video, but sounds same): Rancilio Silvia boiler whistle noise (2) - YouTube

My steam wand is also super noisy when frothing milk.

These issues started to appear after I went overseas and my housemate used my machine.

I've tried scaling, backflushing, recalibrating opv, making sure it's on tight, etc. to no avail.

Any ideas?