Turbo-Torch Posted February 21, 2021 Share Posted February 21, 2021 Odd issue. My O2 boots up to a gray background and all black background games play in gray. If I play UFO, any gray colored UFOs are invisible. If I jump pins 11 and 12 on IC4, I get normal black backgrounds, but light gray object like UFOs are still invisible. All other colors seem fine. I swapped out IC4 74LS00N with one I had on hand and it didn't make a difference. Should I suspect anything other than the 8244 GPU at this point? And if that is the cause, are they unobtainium? I assume the 8245 is PAL (not that it would be any easier to find). Quote Link to comment Share on other sites More sharing options...
Turbo-Torch Posted February 25, 2021 Author Share Posted February 25, 2021 Update for anyone that runs into a similar problem... I picked up another Odyssey 2 at a local video game store for $34 and it works fine. I removed the 8244 GPU from my old O2 and put it in the new working unit and the problem followed it. Definitely a partially failed GPU. Anyone have a working 8244 kicking around that they'd let go for a reasonable price? Quote Link to comment Share on other sites More sharing options...
mtshark7 Posted March 27, 2021 Share Posted March 27, 2021 I might have one? What does the chip look like/where is it located? Pics?Sent from my SM-G986U1 using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Turbo-Torch Posted March 27, 2021 Author Share Posted March 27, 2021 4 hours ago, mtshark7 said: I might have one? What does the chip look like/where is it located? Pics? Sent from my SM-G986U1 using Tapatalk Thanks for the offer, but I managed to find a spare GPU on eBay and that O2 is now working perfect again. Quote Link to comment Share on other sites More sharing options...
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