Jump to content


WTB: TI-99 Modem Power Supply and Keyboard


2 replies to this topic

#1 Dubis7 OFFLINE  


    Combat Commando

  • 2 posts

Posted Thu Mar 21, 2019 4:56 PM

Hi all,


I'm trying to put the finishing touches on my "maxed out" TI-99 setup.  All I need is the power supply for my TI acoustic coupler modem, and I'll be done.


Does anyone have a spare they'd be willing to part with?  The model number is 901017, output is 20V AC, 400mA.  I've heard it's the same as the one used on the Atari acoustic modems. I'd also consider purchasing a second modem with power supply, if someone has one they'd consider selling.


I also have a second TI-99/4A console, but the keyboard is damaged (broken keyswitch and missing keycap).  This is one of those earlier black keyboards.  I'm looking to either repair the keyboard, or just swap in a fresh one.  If anyone has a parts keyboard, or just a spare, I'd be interested in negotiating.


Any help is appreciated.  I'm including pictures of the modem power supply, which is apparently somewhat unusual.

Attached Thumbnails

  • image001(0).png
  • image002(1).png

#2 Ksarul OFFLINE  



  • 5,271 posts

Posted Sun Mar 31, 2019 6:05 PM

That one is pretty hard to find (at least with the TI part numbers). The only Novation power supply I saw on eBay that even comes close had a 24VAC output. . .Keyboards show up on eBay pretty regularly, but they end up costing almost as much as a console. Whatever you do, stay away from the keyboards that were manufactured by Mitsumi (the board underneath the assembly will be a light brown). They used a membrane to establish contact, and those did not withstand the test of time. All other keyboard types are OK to use (green boards of various types).

#3 gksonnier OFFLINE  


    Combat Commando

  • 8 posts

Posted Mon Apr 1, 2019 9:23 AM

I have several TI-99 keyboards if you need one.  Let me know which one you are looking for.  I have 3-4 different types.  

Also tagged with one or more of these keywords: TI-99

0 user(s) are browsing this forum

0 members, 0 guests, 0 anonymous users