Hello. I'm a new member here and want some help regarding an issue I'm having with a watch. I recently acquired this Casio PRW-500-TJ from a private seller. The issue of this watch is the dot matrix displayw has been fading. I bought the watch after meeting the seller and checking it and it didn't seem to have any issue but now the upper display of the watch has developed a tendency to have misssing segments while in main timekeeping mode. It does show full letters while in other modes. Anyone know what's wrong? I don't have watch making tools with me so if anyone can explain what problem this watch has, I'd be able to explain that when I get it serviced.