Airshack Posted July 21, 2020 Share Posted July 21, 2020 Will this TI-99/4 accept power from a common 99/4A transformer? Research tells me some do fine while others may be destroyed, due to a differing power arrangement? 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted July 21, 2020 Share Posted July 21, 2020 As noted on my earlier answer, and confirmed by your pictures, yours should not have any issues with the later power supplies. Your machine definitely has the internal DC supply, and that is the discriminator. The attached picture shows you the type that needs the external DC supply. Note the slide in the cartridge slot. These are the only ones that have issues with the AC supplies. The slide is a volume control slide for the speaker that's under the grille. . . 1 Quote Link to comment Share on other sites More sharing options...
Airshack Posted July 21, 2020 Author Share Posted July 21, 2020 It’s working! Thanks Jim 2 Quote Link to comment Share on other sites More sharing options...
Airshack Posted July 21, 2020 Author Share Posted July 21, 2020 3 Quote Link to comment Share on other sites More sharing options...
globeron Posted July 23, 2020 Share Posted July 23, 2020 (edited) Yours is the normal adapter and it works already. The other one has 1x big PIN and I blew I my other adapter, but you can make your own with a Meanwell adapter. I did a write-up, published in Tijdingen and I think also at AtariAge. Edited July 23, 2020 by globeron Quote Link to comment Share on other sites More sharing options...
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