68kMLA Classic Interface
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| SE/30 Screen Artefacts | |
| Posted by: robin-fo on 2022-05-11 10:39:09 Hi everbody After running for some minutes, some serious pixel errors appear on my SE/30‘s internal screen. The logic board is a replica with all-new passives, the AB is not yet recapped. Snooper doesn‘t appear to find any RAM errors but the DIP PALs get quite hot (ca. 50° C). Interestingly, the pixel errors appear to move with windows… Updates: - After running for ca. 10 minutes, the pixel errors disappear again ( -> heat has distributed evenly??) - Appears with stock and Rominator ROM | |
| Posted by: robin-fo on 2022-05-11 13:10:22 I was even able to make screenshots of it.. What is going on here?? The ClarisWorks canvas on the third picture mostly stayed normal...    | |
| Posted by: PacificState on 2022-05-11 18:35:07 I just built one of the replica boards: - The PALs do get quite hot normally - The RAM test doesn't check the video RAM, I think(?) This kinda looks like a failing bit (or more), but I can't understand why some stuff is drawing correctly. Ideas: - Look at the schematic and recheck the soldering around the video logic - Assuming you socketed the video RAM, you could try grabbing some NOS parts and swapping them in Caveat emptor: there are people on here with more experience than me who could have seen this before and have a better idea ;-) | |
| Posted by: Bolle on 2022-05-12 02:46:29 Try some faster VRAM. For some reason I had similar issues on one board I built. Not exactly sure what causes it, but faster VRAM fixed it. Also PALs getting really hot is perfectly normal. | |
Posted by: robin-fo on 2022-05-12 13:44:32Try some faster VRAM. For some reason I had similar issues on one board I built. Not exactly sure what causes it, but faster VRAM fixed it.Thanks @Bolle; du you have a suggestion which model number I could try and where to look for it? | |
| Posted by: robin-fo on 2023-12-02 04:10:44 *SOLVED* See https://68kmla.org/bb/index.php?thr...d-recreation-thread-revival.39485/post-512595 | |
| Posted by: croissantking on 2023-12-02 04:25:52 Did you apply the fix and did it work for you? | |
| Posted by: robin-fo on 2023-12-02 05:02:13 I applied the fix like on your photo and apparently it did work! Although I didn‘t have enough time for extensive testing, I had it on for around ten minutes or so and I had no longer any artefacts appearing. Thank you so much! | |
| Posted by: croissantking on 2023-12-02 08:08:08 Fantastic. | |
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