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MicroVAX II Museum

The World's First MicroVAX II Museum

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    • Howto
    • Backup/Restore on a VAX
    • TK50 Formatting
    • TK50 Cleaning
    • Repairs
      • BA213 Power Supply Upgrade
      • DECSERVER 200 Fan Replacement
      • VT320 CRT Replacement
      • Attempted Repair – Cipher 880 (or 891) Tape Drive
      • LK402-AA Keyboard Fix
      • VT320 CRT Replacement
      • KA630 Console Bulkhead Dead LED Output Fuse Fix
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    • A Custom Combo MicroVAX II Panel Board
    • BA23 Power Supply (H7684-A / H7864-B) Replacement
    • KA630/650/655 TOY Battery Replacement Board
    • FUNCT SEL/SLU Module Replacement Project
    • TARZAN- a Homebrew MicroVAX II
  • Exhibits
    • MicroVAX 3 (Actually a DSVAX III)
    • The MicroVAX I – Slow, Really Slow
    • The MicroVAX II – Workhorse of the 80’s

Category: Repairs

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Howto Repairs Uncategorized

VT320 Horizontal Size Adjustment Hack

December 28, 2021April 27, 2022By Alon

The VT320 terminal has a “width” adjustment coil – but on one of my terminals at least it coil does not offer a very good

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Howto Repairs

KA630 Console Bulkhead Dead LED Output Fuse Fix

March 24, 2018July 9, 2020By Alon

If your KA630 seems to work OK but the console bulkhead LED display is dark, the issue is probably only a burnt-out fuse. A result

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Repairs Uncategorized

BA213 Power Supply Upgrade

May 24, 2017March 24, 2018By Alon

I managed to put my hands on a “Dec ChannelServer II” BA213 box, with a dead H7868-B power supply. The ChannelServer was based on a

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Repairs

LK402-AA Keyboard Fix

May 24, 2017March 24, 2018By Alon

After several years of just sitting on the shelf, the “LEFT” key on one of my LK402-AA keyboards went dead. Completely dead – no matter

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  • VT320 Horizontal Size Adjustment Hack
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Pages

  • A Custom Combo MicroVAX II Panel Board
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  • ROM Images
  • Switch and Jumper Settings
  • Useful Tips (Software)

Recent Posts

  • VT320 Horizontal Size Adjustment Hack
  • JANE the MicroVAX II is Here!
  • TARZAN the MicroVAX II is running MATLAB !
  • “New Machine, New Strategy”

Pages

  • A Custom Combo MicroVAX II Panel Board
  • About
  • Backup/Restore Operations on a VAX
  • Home Page
  • Links
  • Literature Collection
  • MicroVAX II Hardware Resources
  • ROM Images
  • Switch and Jumper Settings
  • Useful Tips (Software)
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