Thus wrote: <Robert M. (Bob) Donan E-mail: donan(a)utk.edu <The Tandy TRS80 Model III, as delivered, did not come with a green <screen. Either the machine has been upgraded (requiring a different <video board) or it is not a Model III. I may be able to help you either <way as I have been repairing Radio Shack computers since 1979. You <could help me answer your questions by answering the following <questions: There were at the time several companies offering replacement CRTs to go no other alterations required. H19s and a few other terminals/systems were modified that was as well. Robert, Did you work for tandy? I was up in PA when the TRS80 hit. Allison