Such things are rarely repaired but the line in use should block almost all use of this thing.
We had a lightning strike at our church that took out several things and now our fax machine isn't working properly. It is an old machine. The model # is KX-FP200. I know it's atleast 8 years old and probably older. It will not accept an incoming or outgoing fax and the screen display says "ext. in use". It won't dial. I'm trying to determine if it's just time for me to order a new one. Any help would be appreciated.