68kMLA Supporter karrots Posted October 14, 2020 68kMLA Supporter Report Share Posted October 14, 2020 Does anyone have one of the battery holder boards described in this document? I'd like to recreate it for my unit. http://tim.id.au/laptops/apple/legacy/macintosh_ii.iix.iifx.pdf Quote Link to post Share on other sites
68kMLA Supporter cheesestraws Posted October 14, 2020 68kMLA Supporter Report Share Posted October 14, 2020 I think I might? I'll have a look in a bit when I'm by the Macs. If I forget, remind me... Quote Link to post Share on other sites
360alaska Posted October 14, 2020 Report Share Posted October 14, 2020 (edited) If you bend the leads on the 1/2 AA holder out a little bit it will fit without any addon board. Edited October 15, 2020 by 360alaska Quote Link to post Share on other sites
LaPorta Posted October 15, 2020 Report Share Posted October 15, 2020 Better yet: just get new battery holders like on the SE, SE/30, etc, solder those in, and you are good to go. I did that on my II. Quote Link to post Share on other sites
max1zzz Posted October 15, 2020 Report Share Posted October 15, 2020 Someone on this forum (I can't remember who) made replica boards a while back Personally I used CR2032 holders and ran wires so they could sit off the edge of the logicboard on my IIx to prevent it getting battery damage again in the future Quote Link to post Share on other sites
oldappleguy Posted October 15, 2020 Report Share Posted October 15, 2020 Quote Link to post Share on other sites
tt Posted October 15, 2020 Report Share Posted October 15, 2020 20 hours ago, max1zzz said: Someone on this forum (I can't remember who) made replica boards a while back Yeah, that was me. @karrots I think I still have an assembled one if you are interested. I think I made a thread in the trading post. Quote Link to post Share on other sites
68kMLA Supporter karrots Posted October 15, 2020 Author 68kMLA Supporter Report Share Posted October 15, 2020 I may but I won't know for about a week. I'll pm you or find the thread if I need one. Still $23? Quote Link to post Share on other sites
MrFahrenheit Posted October 15, 2020 Report Share Posted October 15, 2020 My Mac II machine has one of these boards on it. I was surprised when I popped the cover and saw it. Quote Link to post Share on other sites
tt Posted October 20, 2020 Report Share Posted October 20, 2020 @karrots Yeah, send me a PM. Quote Link to post Share on other sites
DeChief Posted February 10 Report Share Posted February 10 On 10/15/2020 at 3:39 PM, oldappleguy said: Does anyone know what the capacitor is for? Quote Link to post Share on other sites
ymk Posted February 10 Report Share Posted February 10 Guessing here... to retain the memory through a battery swap. Quote Link to post Share on other sites
DeChief Posted February 10 Report Share Posted February 10 4 hours ago, ymk said: Guessing here... to retain the memory through a battery swap. That would make sense, thanks. I've been having trouble with a Mac II that often refuses to boot until I've removed both CR2032s and the power cable, left it for 60secs, then put everything back in again. Right now it's not even booting after doing that... Quote Link to post Share on other sites
CC_333 Posted February 11 Report Share Posted February 11 On 2/9/2021 at 7:07 PM, DeChief said: Does anyone know what the capacitor is for? On 2/9/2021 at 7:09 PM, ymk said: Guessing here... to retain the memory through a battery swap. It might make sense to add a small modification, wherein the capacitor can be discharged via a jumper and a resistor (to prevent it from discharging too quickly and causing damage to something), thus wiping the memory and allowing for a true reset. It would then be somewhat akin to the CMOS/BIOS reset jumper that many PC motherboards have. c Quote Link to post Share on other sites
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