Saw someone advertising this old Breville Espresso machine for parts.
The heater and water pressure works, but it is stopping halfway through the brew.
Gave it a good clean (like my life depended on it) and decalcified the lines. Still has the same problem. I noticed the power button doesn't seem to be responding, but it does seem to have some button modes that are being detected by logic. So I left it in run mode and tried power cycling at the wall and voila it made me a perfect Espresso.
So I'm expecting it's got a power related issue, when it stops it's pausing to heat and the power cycle overrides and seems to constantly heat.
Found this website which points to an X2 cap which confirmed my suspicions and seems to be a great resource.
Been too lazy to open the cover and repair it yet, just enjoying my 10c a cup power cycled Espresso.