I had the same problem and all I did was disconnect the negative terminal, then the positive one. Reconnect in reverse order and mine start chirping away. Not sure if this can be classed as a fix but it worked on mine. :)
Mike, August 2010
you do not have to reprogram a laserline remote if it has been working in the past.
www.vehicle-electronicsdirect.co.uk
macca, February 2010
You may need to reprogram the remote back to the alarm. Contact Tech-Tronics 0161 869 0050