Hazard lights won't turn off

Hi there all,

Did not use my 1994 xj40 for 3 days. Everything was working fine before that. Got in the car, started it up, all going fine except no
blinkers (turn signals) and hazard lights would not turn off. Dashboard switch had no effect. Tried disconnecting battery but to no effect. Pulled out circuit board for dashboard switch but still they stay on. Central locking also turns on/off when you start the car. Suspected problem may be with the security system so I tried resetting this but still no result. Any ideas would be appreciated.