So I'm trying to fix the power supply for my espresso machine. I've determined that the transformer is likely the problem (no continuity across the primary coil). The OEM transformer (encapsulated) (Myrra 44170) is 117vAC to 9vAC with 256mA current on the secondary coil. In trying to find a suitable replacement transformer I have come across a few questions.
I'm in the US and from what I've read I should be ok with 120V primary voltage, is this correct?
Is it necessary for the transformer to be encapsulated? I know this was probably done for safety reasons, however the device wouldn't be left powered on.
I can't seem to find a transformer available for 9vAC with the current around 256mA.
I was able to find one that seems like a suitable transformer (120vAC - 9vAC @ 500mA ventilated) would this work for my application? I'm just getting into electronics and electrical engineering so any advice would be greatly appreciated. Also if the replacement transformer mentioned isn't compatible could someone please provide a link to purchase one that is? I've attempted to scour the internet and am having very little luck finding 120 - 9vAC transformers that are in stock.