[Ticket Question] Texecom R8+ Tamper Light Lit?

[Secware]

I've a customer with a veritas R8 plus alarm system, which is not working.
The keypad / control has the set & tamper lights lit, but none of the indicator lights. They've had a couple of people look at it, & although one company changed the battery which corrected the problem for about 6 weeks.
It is now the same the control panel battery is showing 12.7v on the meter .
The keypad does not appear to be functioning correctly as when some buttons are pressed they operate 2 buttons at once. I'm thionking of changing the panel, but also wondered if it could be a problem with the battery in the outside alarm box. I wondered if you have come across this problem before, if so can you give any advise?

[admin]

fault finding wise, id remove all wiring and connect the keypad to the panel on a short wire. then if that functions narrow down the fault. If it doesnt function then it may be keypad or panel