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Commodore CBM 4032 (40 Columns) Repair

August 31st, 2014 Leave a comment Go to comments

Commodore CBM 4032 (40 Columns) Repair

Defect:

  • “Device not present” error when using the IEEE 488 port (Example Floppy Drive)
  • Sometimes the computer show the prompt of the TIM monitor (Machine Language Monitor program)

Replaced parts:

  • Replaced 1 x IC 6522 VIA (UB15)
  • Replaced 1 x IC 6520 PIA (UB16)
Categories: Projects / Repairs, Today, Various
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