Acer Aspire AX3400G Power Switch/Button

I think the power switch/button on my desktop Acer Aspire X3400G is not working intermittently. The computer began not starting after pushing on the power button. It would begin to start then blue light would go out but the PSU fan would continue to run. I would unplug the power coard and plug it back in and the computer would start and run just fine. I replaced the PSU but now it is still not starting intermittently. I am looking for a new switch but can only find this one on ebay (http://www.ebay.com/itm/Acer-Power-B...#ht_1000wt_900)
Does anyone know where I can get a new switch for this?

Steve