This is a pin-for-pin compatible nearly exact replacement for the LCD module in the Sharp EL-5100 pocket computer released in 1979. I am not certain at this time whether this LCD will also fit the EL-5100S.
Many EL-5100 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 EL-5100 computers back to life by reverse-engineering the LCD and remanufacturing them.
These LCDs were custom manufactured by Sharp for the EL-5100. 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.
The instructions are the same as for the Sharp PC-1211. I've made a video showing how to replace one of those 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.