A500 zero "0" keys not working

[dougal]

As the title says.

I tried pressing "0" (Zero) on both the keypad and the number key and all keys work except for both "0" keys.

Any ideas what could be wrong?

*NOTE* I tried using these keys while the Action Replay was plugged in. I did not try without it.

[ElPolloDiabl]

I'd suggest give everything a good clean and a quick scan. Check none of the pins have cracked on the keyboard controller.