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    • This is awesome!  Following.
    • The caps will def need to be changed on both the power supply and the computer itself. That could be the problem in itself. 
    • I have nothing to contribute here, other than my sheer astonishment and delight that a WalkMac is alive and running in 2020. I have vivid memories of reading about this thing in some Mac-centric magazine when I was a kid (maybe a mention or write-up in MacWorld or another magazine of that era), and just being blown away at the idea of using Mac software on a crazy-cool orange plasma display.   I'm so happy that this machine has been saved from whatever sad fate presumably befell most of the other WalkMacs that would've existed back in the day. Please keep sharing any further developments or discoveries about this machine!   Huxley  
    • Read through cheaper 9 of this book. You'll find most of your answers there. It's likely you need to replace the opto coupler.   What version of AB do you have? CP1 should be available from any major electronics dealer.   For sound my CII originally had scratchy sound then lost it all together. After recapping the AB and I think desoldering the sound chip and cleaning and putting it back on it stared working fine. One of the caps on the logic board directly affects the sound. If you pull that trace and don't repair it will have issues as well.  
    • Strange stuff, got connector on solder side? This is all I found, search "formac" on the page: https://appleclub.pl/index.php/en/2018/01/05/macintosh-nubus-se-cards/
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