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Selcom/Jen Lemon II (Keyboard repair & Cleaning)

I have received a Lemon II computer (Apple ][+ / Europlus Clone) in a good cosmetic condition but with a serious problem at the keyboard, here below defects and repairs that has been made.

Cleaning comparison (before / after):

Gallery of the repair:

Defects:

  • First problem: When a keyboard key is pressed is always displayed the same character, in this case the character “O”
  • Second problem (which i have only noticed after solving the first one): The keyboard works correctly, all characters are displayed in the correct way, but sometimes the character displayed does not match with the key pressed. Example: when pressing many times the letter “I”, after a while is displayed the character “Y” and after a while it show the right character “I”.

Components Replaced:

I have to thank my friend Luca that called me to inform me that there was still a piece of the SMC KR2376-ST available in the store.

  1. Piero Andreini
    April 23rd, 2015 at 09:39 | #1

    Sono riuscito a recuperare un Lemon II con mobile alluminio funzionante e discretamente conservato che aveva solo un 82T8 ed una ram guaste. All’acensione spesso entrava in monitor ed anche eseguendo qualsiasi istruzione basic. Sostituendo le Eprom F0 ed F8 con quelle di apple ][ originale funziona perfettamente e purtroppo non riesco a trovare in rete il dump di quelle LEMON II.
    Potresti gentilemente inviarmi i files?
    Grazie mille,

    Piero

  2. April 23rd, 2015 at 17:34 | #2

    @Piero Andreini

    Salve Piero,

    Fortunato a trovare un Lemon, pure io sto cercando altri modelli sempre della serie Lemon.

    Appena ho l’occasione di tirarlo giu’ dallo scaffale, lo faccio sicuramente, non so dirti quando ,ma sara’ fatto.

    Le immagini delle rom le troverai in Download pubblico le post principale del Lemon.

    http://www.nightfallcrew.com/05/03/2014/selcomjen-lemon-ii-with-floppy-disk-drive-and-monitor/

  3. Marco
    February 17th, 2018 at 10:42 | #3

    Hi guys,
    I have a Lemon II suffering from bitrot and i need the rom images for it, has anyone got an idea where i could find them?

    Thanks a lot
    Marco
    marco.p.roma128@gmail.com

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