Many PC-3 and PC-125x pocket computers suffer from LCD degradation to the point where they are no longer useful. Apparently the seal around the LCD was of poor quality, and over the years moisture gets in and ruins the liquid crystal. The result is a display ranging from a few splotches to complete failure.
I decided that it was important to bring all these dead PC-3 and PC-125x computers back to life by reverse-engineering the LCD and remanufacturing them.
These LCDs were custom manufactured by Sharp for the PC-125x. Radio Shack had a rebranding agreement with Sharp, and named the computer the TRS-80 PC-3. Replacement LCDs were never available, and finding a working LCD is problematic, given the systematic failure of the seal.
I tried as much as possible to make the fonts and positions used for the indicators as identical to the original as possible.
I've made a video showing how to replace one of these LCDs. There are a few crucial things you have to be aware of:
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I ship via the United States Postal Service, every Monday (US Pacific time) except on USPS holidays, when I ship on the next open day. US destinations usually take a few days after that, UK/EU/JP about 2 weeks, and South and Central American destinations can take up to 6 weeks.