Greetings! David,
I tried cleaning the cable contact points and the Panel keys, seems the system itself freezes after the Power ON bootup sequence, responds to "Preset" key instantaneously but other key entries respond after a delay of almost 10 secs. As per the Service manual it mentions to Clear the user memory by performing
CONFIG, More 1 of 3, More 2 of 3
DISPOSE USER MEM
Do not see any improvement, any suggestions.
Many Thanks,
Best Regards,
Kris