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Commodore Floppy Drive 1541 Repair

Commodore Floppy Drive 1541 Motherboard #1

Defect:

  • IEC bus unresponsive.

Replaced parts:

  • Replaced 1 x VIA 6522 (UC3)

Commodore Floppy Drive 1541 Motherboard #2

Defect:

  • IEC bus unresponsive.

Replaced parts:

  • Replaced 1 x VIA 6522 (UC3)
  • Replaced 1 x 7414 (UA1)
  • Replaced 1 x 901229 ROM (UB4)

Removed parts:

  • SpeedDos adapter with the flat cable (user port bus) cutted.
  • SpeedDos ROM Adapter.

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