Question about Office Depot Ativa D5772 Phone
I have an expensive Plantronics Calisto cordless phone and headset.
# '7' on the dial pad doesn't work. Any ideas?
Most of these devices use a conductive rubber "pill" that is pressed against a set of interdigitated finger traces on a circuit board beneath the keys. These can get dirty OR can have a crack in the circuit board/trace.
The latter is fatal. The dirt you disassemble and clean with a Q tip and 91 or 99% isoprophyl alcohol.
Clean both the "pill" (usuall black) and the place it presses against.
Keep the alcohol off the plastic case.
Posted on Jul 25, 2009
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Posted on Jan 02, 2017
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