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Radio Shack TRS-80 Model 1 Repair

September 29th, 2014 Leave a comment Go to comments

Radio Shack TRS-80 Model 1 (#2) Repair.

Defect:

  • Black Screen.

Replaced parts:

  • Replaced 1 x CD4069 HEX Inverter (Z6)
  • Replaced 1 x CD4069 HEX Inverter (Z57)
  • Replaced 1 x 74LS00 QUAD 2-INPUT NAND GATE (Z5)

Categories: Projects / Repairs, Today, Various
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