Replace the back up battery. Try a hard reset.

"Dick" wrote in message
ps.com...
I have a backup 1550 that has just been sitting in it's cradle for at
least a couple of years. Recently the charge light went out and the
unit would not turn on. I switched the main battery with my other
1550 and the unit still would not turn on, nor would the charge light
come on??? Anyone have a suggestion? Dick