I have about 2 dozen M7208 and M7310 sets that I have accumulated through the years. Most of them are lightening strikes that I have kept in my shop for replacement parts (handsets, etc.)

They almost always have the same problem;
-all indicators light up solid with no functions,
-or they work with a partial or no LCD display. It is always the time display area that screws up.

Any quick fixes for these sets or are they NFG?