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Junk Characters/Text in Epson LCD Display

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    Junk Characters/Text in Epson LCD Display

    This part was removed from an old thermal printer. The printer works properly but the display is corrupted and shows junk characters.
    Can the display be repaired?. Any chance?.
    Do I need to buy a new display module?. The exact display module is not available as spares as it is a 15 years old discontinued and obsolete model. So I am stuck. Can i replace this module with any generic display module?.
    Module pics are here ...

    https://drive.google.com/open?id=0Bx...kx4MUJSOXJNZmM

    Thank you for the help in advance.

    #2
    Re: Junk Characters/Text in Epson LCD Display

    you could use a microcontroller to convert the data from sed1335 to sed7735 commands and then use a cheap colour lcd from china.

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      #3
      Re: Junk Characters/Text in Epson LCD Display

      Are there any ready converters available in the market.
      Will TI msp-430 be enough for the convertion logic/programming or do I need more powerful micro controller..?

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        #4
        Re: Junk Characters/Text in Epson LCD Display

        anything with enough pins i imagine.
        i doubt there is anything already made.

        download the datasheets and compare them.

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          #5
          Re: Junk Characters/Text in Epson LCD Display

          Here's the datasheet for the chip : https://cdn.badcaps-static.com/pdfs/...db76f38a82.pdf

          It's basic parallel 8 bit input + wires for extra stuff, I figure any microcontroller with around 10-14 i/o pins can drive the display.

          You can figure out the pinout by looking at the datasheet and checking with a multimeter (continuity mode) or with your eyes where various pins on the IC go in the header.
          Some pins in the header you may not have to use under some conditions.

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            #6
            Re: Junk Characters/Text in Epson LCD Display

            Thanks a lot for your suggestios. I will try with arduino then.

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