14/03/10 New fault: spectrum 48k issue 3 that after TR4 changing (there weren't -5v & +12v) It started well but It didn't work properly ( but it passed some tests without problems). It hung / reset when It loaded games and also with some external interfaces. I check ULA (OK),Z-80 (OK) ,ROM (OK) y TR6 (OK). This spectrum is an 16K upgraded to 48K. In the service manual said that IC25,IC26 can't be National Semiconducter chips but this spectrum had National chips. The solution was to change both 74LS157.

    13/02/10New fault: Spectrum 48K issue 4S with white border and black paper with dot vertical lines.Lower memory fault.

    30/01/10 Update the file about MIDI Ventamatic with the box's interface photos .

    15/09/09 Update the file about MIDI Ventamatic with the instructions of the interface. Thank to José Manuel y Javier Vispe.

    6/09/09 New interface:
       Swift Disc interface made by Sixword (UK).
       Swift Disc 2 interface made by Sixword (UK).
   Other interfaces Seccion.

    5/08/09 New Interface: CopiaSoft +3 JG Componentes (Portugal). Other interfaces Seccion.

    15/05/09 New interface: Cartridge for Timex 2068 (II). Thank to Bruno Florindo. Other interfaces Seccion.

    19/04/09 New interface: Joystick interface Ventamatic. Thanks to José Manuel.

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