I need a location for a part

The expansion/retention valve needs to be replaced, that is what's leaking in the box and giving the noise.

The keypad needs to be replaced.

Where is the steam coming from, if its from the top, then the problem is the vent valve or the safety valve, if it is the safety then the pressure stat needs to be replaced because it might be damaged or blocked at the tube that connects it to the boiler.

Check to see if your machine has a reset thermostat on the left side of the boiler, on new models it is located on the top, second some machines have a 2 position switch make sure it is on 2.

Check the expansion valve, and replace the pump you will have to install a check valve in the out port side of the pump.

Check to make sure that there is water in the boiler by either checking the sight glass then rocking the machine to see if the water level bobs up and down, then check the thermal reset switch on the left side of the machine above the element. Make sure there is water in the boiler before pressing reset and turning machine to number 2. After machine heats up make sure pressure does not go past 1.5 bars on the gauge. If it does then the p.stat needs to be replaced.

Your coffee supplier will be able to provide you with one.

www.kaldi.com

here is the site where you can get your presure gauge and other parts for your machine.http://www.espressoparts.com/results.cgis?catalog=&select=NAME&keywords=astoria+pressure+gauge&image.x=15&image.y=14

When you press the dispense button does the needle on the dispensing pressure gauge move up to the green area? If so, most likely your group head solenoid valve is bad. It's located behind the back splash. It's a small black box connected to a metal tube just behind the group head. They cost around $70.

If the needle doesn't move it could either be your pump or motor. Now you're in the $200 range.

Astoria Argenta AEP-2 Coffee Maker, Espresso Machine Coffee... Astoria Argenta SAE2 i need a user manual for Astoria Argenta SAE