Hi Dan,
It is a very well known problem. As the key contacts age and get dirty,
they sort of "fry" rather than make a clean contact.
You can gain a short term fix by replacing the two 1uf tantalum key debounce
caps with a larger value. These capacitors are axial leaded hermetically sealed
wet s
My 2100 timing receiver (no suffix) has started to give me problems with
what looks like bounce from the keypad switches, with a lot of numbers
repeating without being asked. Is this a known problem with these
units, and is there a known fix? I don't think the guts of the pad are
accessible f
