Rice Cookers Sanyo

I bought a pressure Rice Cooker from Japan. The brand is Sanyo ECJ-JK10. I have made a 110v electrical out for it but my 80 years old Mother accidently plugged it into 220v outlet. A loud popping noise and the cooker is dead. I could not find anyone who could fix the problem. All said the main processor is dead. I tried the Sanyo website but all in Japanese. Could anyone advice of how to fix or to buy the replacement part? We love this cooker very much and would try every possible ways to fix it. Thanks in advance for your assistant. Thomas