places that does alarm repair

hi everyone that's from the san jose area =) 408 area. I just want to ask if anyone from the area knows any place that does alarm repairing? meaning like fixing an alarm so that it works properly =) well if anyone knows a good descent and honest place that don't rip you and know what they are doing and are certified let me know. it doesn't have to be areas in san jose either. anyplace far is okay I just need to get my alarm fix thanks for any responce.