If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
Here is a link you or someone you know can use to test it, but please read the safety info:http://www.gallawa.com/microtech/cap_test.html
You can order Panasonic parts from Tritronics here
or by calling 866-779-5835, but if you don't find what you're looking for there, try here
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