I am trying to help my grandmother with a phone problem. I'm not entirely sure what's going on (she's very confusing) but some (possibly all) of the Caller ID displays on her home telephones are garbled to the point where they're unreadable. I think it happened after a thunderstorm where the electric went out. The phones work fine except for the displays. It's on both the cordless and corded phones.
Is it at all possible that the storm would damage only the displays on the phones but yet the phones still work fine otherwise? I can't be sure, but I think even the cordless extension sets that aren't even connected to the phone line have the garbled display. That seems really strange to me.
Michael S.