Need PSU for Emachine w3506

I have my emachine w3506 running my mame arcade cabinet. I blew the psu by plugging the monitor into the arcade monitor power converter by mistake. Everywhere online that i have looked so far has not given me a clear answer on what power supply to by. Some say 400 or 300 or even 500. I'm pretty sure its stock. I need help choosing one for right price and the right equipment. Thanks for your help

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Look at the sticker of the one that's blown, it should tell you the wattage you need.

1.21 jigawatts is what you need

Your eMachine uses standard ATX power supply, so any power supply will do, such as this one. Use coupon code EMCYPPY58 to get it down to $25 + $6 shipping.

Go to www.newegg.com and check out power supplies that are on sale...get at least the wattage of the one you blew out.