TI 709 Data Terminal

Restoration Project #55 - TI 709 Data Terminal

And back to some communications equipment again! The project has been some time in the making, as I ran into several issues on the way. The Silent 700 series is rather well known in retro computing circles, so I think I don't have to elaborate on it here; just to point out that the 709 model I have is the international version of the 707 model. It comes with a built in modem and accoustic coupler. The latter was my primary reason to get this one, since my collection was lacking anything acoustic coupler-y so far. There should also be an external "box" available as an alternative to te AC which would connect to a phone line directly. It supposedly contains the missing components to interface with the phone line; I just can't find it anywhere on the internet... would be a nice build project too: can't be too complicated, it's mostly a relay and a 1:1 audio transformer that is missing but I'd need the component values to be sure my addition doesn't upset the internal circuit!


0:00 Intro / Overview
1:29 Unpacking
4:12 Disassembly: Acoustic Coupler (AC)
7:08 Disassembly: Terminal
9:16 PCB "Botch" Info / Keycaps Removal / Disassembly: Printer Untit
11:39 Disassembly: Cartridge / Cartridge Info
12:55 Recapping!
14:35 O-Ring Cleanup / Assembly: Printer Unit
17:09 Assembly: Terminal / Power Brick Cleanup
18:27 First Power On! / Keycaps Mounting
20:32 Cartridge Closing / Testing With Cartridge
22:22 Rubber Speaker Cover... / AC Trial Try / Printer Issue
25:15 Power Supply Issue (Summary)
26:15 Rubber Speaker Cover, Rebuild!
30:00 Assembly: Acoustic Coupler
31:55 Linkup Time! / Second Cartridge Score!
34:40 Battery Test
35:37 Packing Up / Summary / Credits / Outtakes

Generic info about the terminal series: https://en.wikipedia.org/wiki/Silent_700

Music (in order)

My Train's A Comin' - Unicorn Heads
Nine Lives - Unicorn Heads
Wrong - Dan Henig
Town of 24 Bars - Unicorn Heads
Light Expanse - Unicorn Heads
(YouTube Audio Library)


You can support me with regular small donations
on Patreon:   / atkelar  
or by becoming a channel member!

Or just occasional one time support via
Ko-Fi: https://ko-fi.com/atkelar
or using the "Super Thanks" feature!

Thanks to everybody who signed up already!