h.conc Posted October 24, 2022 Share Posted October 24, 2022 Hi, my ti-99/4a is showing garbage on screen. It seems as though bit 6 is stuck high but it says here that bit is always stuck low not high. the problem seems to be in a specific column on screen and not entire screen. as seen in pics space which is 00100000 in bin shows as " which is 00100010. Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted October 25, 2022 Share Posted October 25, 2022 (edited) RAM errors, check the pinned FAQ post for details on repairs for ram Edited October 25, 2022 by arcadeshopper 3 Quote Link to comment Share on other sites More sharing options...
matthew180 Posted October 25, 2022 Share Posted October 25, 2022 There was a garbled video thread last year... here is a link: Lee posted photos of a bit stuck-on (rather than stuck-off). The image for bit-6 looks like a good candidate. The nature of the DRAM failure may be periodic, which is why it seems to only affect 1 column. 2 Quote Link to comment Share on other sites More sharing options...
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