Optima Compact ?

Hi.

I was doing some painting and i taped round one of the sensors of my alarm. The alarm went off, i tried to reset it but it just kept going off again. Then it stopped and my kepad froze. THis was two weeks ago, suddenly tonight the alarm beeped and the keys started working again only for the alarm to go off and the same keylocking to happen again. Anyone have any ideas how to fix it appreciated???

Cheers