Flakey Option 11

[GparkXO]

Sucession Rls 4
I have an option 11 that randomly turns on the key lamps of various keys, sometimes on an scr key the lamp will light with no caller, sometimes flicker with no ringing, occasionalll other keys will activate the key lamp.
I suspect I will need to change the SSC card, but before I do, has anyone had any similar experiances ?

 

[TAnselm]

I've seen that sort of thing on bad cables.
Also insure that your system is grounded properly.
I've seen before where a system was grounded to a ground bar that was grounded somewhere else that was grounded somewhere else... and after a construction project the ground magically disappeared causing all sorts of problems with the Option 11. They are VERY touchy about grounding.