TI-99/4A - Powering Up and Diagnostics (Part 1)

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The latest arrival at the Lab is a TI-99/4A. This one comes without power supply and without a video cable. To make things more challenging, it's a computer I had no previous experience with. So join me today, as we try to power it up and get it up and running.

Chapters:
00:00 Intro
00:24 Outside look
00:57 History and background
02:01 Opening it up
02:50 Board and IC description
7:51 Powering it up
14:52 Checking for signs of life
16:31 Looking at video out
18:56 Diagnosing continuous sound
27:44 Conclusion

TI-99 Italian User Club
TI-99 Architecture

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