techknight's latest activity
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techknight replied to the thread LCD Replacement for the Macintosh Portable.No, when you lay out an RP2350 or likewise design, you have to follow the layout guidelines exactly to a T, or your DC converter doesn't... -
techknight replied to the thread Macintosh Portable M5126 - Battery problem - Good night :0).Yay! Good, it all worked out. Even though its not your case, sometimes itll open a trace between the negative side of that 47UF cap...
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techknight replied to the thread AppleCD SC Teardown and Troubleshooting: Sony CDU-8001 Drive.Ive been working on 3 of these drives recently. They are starting to succumb to polarizing prism degredation. Theyre laminated much like...
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techknight replied to the thread 68kmla MIA.This was years ago. I dont remember exactly when but it was a handful of years ago. Pretty sure this was from before they migrated...
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techknight replied to the thread 68kmla MIA.The owners/administration over at 68kmla is pretty much why I stopped going over there. I still get DMs from there time to time which is...
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techknight replied to the thread Color Classic analog board re-design, needs community feedback..Glad to see it all running! I will say the big difference from an actual 640x480 board and the CC board is the flyback (has a...
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techknight replied to the thread Color Classic analog board re-design, needs community feedback..Thats only slightly high but its not too far off. It also needs to be under a load from the flyback producing HV before you can really...
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techknight replied to the thread Color Classic analog board re-design, needs community feedback..Yeah that HV side runs 24/7, thats why those zeners get baked out. That transformer on the 520/550/575 has a slightly different winding...
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techknight replied to the thread Color Classic analog board re-design, needs community feedback..The amount of times I can count where I had issues with that PSU id be rich. I can say that I am not surprised, hopefully you iron it...
