Not sure what to do

I've got a couple of SHARP WWVB clocks - actually three but one is dead.  The one I have in the basement started acting up, some segments of the LCD are missing:

The bad one is on the right.  The problem is with the DAY (should be WED) and the tens of minutes (should be a 4).

  Here are closer but fuzzier views:

Good clock

bad clock

I checked the AA cells, they are both Energizer Lithium which read over 1.7 volts as do the cells in the good clock.  I got out the dead clock mainly because taking it apart wouldn't hurt anything and to see how the LCD was connected to the clock chip.

  I was expecting some kind of pressure-elastomeric interconnect but these appear to be bonded together with some kind of stick-em like double sided tape or conductive glue or ??  Anyway it doesn't look like there is a way to just swap the LCD easily.  The back of the clock has the WWVB receiver:

see the green-red wire near the hole ?  that was intended to bring the piezo alarm signal out to another project

As I recall the WWVB receiver still works so that's why I kept the clock.  The damage was my fault - I was trying to create a time sync using the alarm - I added a jack to the clock and tapped into the piezo signal.  But I zapped it somehow - now that I think of it the piezo may be driven differentially for higher volume (like the Piezo Loudenator kit) so I may not have understood that at the time.

I was always puzzled by the Sharp name on the clocks.  These are from the late 1990s - I think they were bought at Wal-mart.  Possibly Sharp in Japan had begun offloading their name even then ?  Asianometry did a video on Sharp's decline and fall:

source: https://www.youtube.com/watch?v=wK7bGdUcibM 

As far as the clock, I think I'll just try and use it as is for now - possibly it's humidity thing ?  It seems to me that this has happened before and the clock magically began working again.

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm