I did a little video series on my latest TI-92 situation. Was able to resolve with a thorough cleaning and a new set of batteries, plus dimming the display once powered on since the screen was like black entirely. [br]
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Part 1: https://www.youtube.com/watch?v=DQOAxc9f-Yk[br]
Part 2: https://www.youtube.com/watch?v=HHfKXPize08[br]
Part 3: https://www.youtube.com/watch?v=1HX28apko_g