PC 40-01 | DA4 010809

PC 40-01

Serial: DA4 010809

  • Mainboard: NBI 4200:
    • Processor: 80286
    • Processor Speed: 6/10MHz
    • Onboard Memory: 1MB
    • BIOS: Award
    • NPU Options: 80287
  • Video Card: OAK TECHNOLOGY OTIVGA 1570 OTI077 CHIPSET 512K ISA 16 BIT VGA CARD:
    • Data Bus: 8-bit ISA
  • Floppy: 3,5″ HD 1,44MB
  • HDD: ?????XXXX????:
    • Interface: MFM
    • Physical Size: 5.25″ HH
    • Capacity: 20MB?
    • Speed:3,600RPM ???
    • 823 cyl, 6 heads, 17 spt – but works as “type 3” ???
  • work performed:
    • whole machine completely dismantled and cleaned
    • power supply repaired: secondary caps shorted, switching transistor shorted
    • two blown tantalum caps on mainboard replaced
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