Irritatingly I've tried all above from deep cleaning to re-priming, to no avail. The pump makes a fairly unhappy noise when I press the button (it's a vertuoline) then flashes double white repeatedly. No blockages in the needle and after disassembling the top cover I can see an air bubble or two in the line, but nonfix repriming. Might be one for Nespresso given how hard it is to disassemble!