Home > Projects / Repairs, Today, Various > Repairing Radio Shack TRS-80 Model 1 ..for the third time

Repairing Radio Shack TRS-80 Model 1 ..for the third time

Repairing Radio Shack TRS-80 Model 1 ..for the third time

Repairing Radio Shack TRS-80 Model 1 ..for the third time

Defect:

  • SHIFT keyboard switch broken.
  • Garbage Screen on boot (already repaired).
  • Flat cable of the Keyboard broken (already repaired)

Repair:

  • Replaced the keyboard switch with a new one taken from a keyboard (the good one) of the Texas Instruments TI-99/4A that helps me many times.
  • Replaced a 2102 Video SRAM.
  • Rebuilt the keyboard flat cable.

Gallery of he repair:

  1. March 29th, 2017 at 16:43 | #1

    A better suggestion for the keyboard repair:
    http://tabajara-labs.blogspot.com.br/2017/03/restauro-do-trs-80-modelo-1-parte-2.html
    (used a pair of photos from your article, with due credit. Hope you don’t mind!)

  2. March 30th, 2017 at 15:24 | #2
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