Category archives: Model 4

Video of the checks and maintenance I go through when getting a Model III or 4 ready to sell

Posted on 16 December 201225 September 2025 by admin

http://www.youtube.com/watch?v=76bVeQP8m3Y

TRS-80 Model III 4 hard drive boots dual operating systems

Posted on 27 May 201225 September 2025 by admin

http://www.youtube.com/watch?v=0_JbYGis0a8

How to upgrade a TRS-80 CRT in a Model 3 or 4

Posted on 8 April 201225 September 2025 by admin

http://www.youtube.com/watch?v=9sMXSMSsCZU