68kMLA Classic Interface
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| Macintosh II Battery Holder Board | |
| Posted by: karrots on 2020-10-14 04:05:50 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 | |
| Posted by: cheesestraws on 2020-10-14 10:15:12 I think I might? I'll have a look in a bit when I'm by the Macs. If I forget, remind me... | |
| Posted by: 360alaska on 2020-10-14 16:50:38 If you bend the leads on the 1/2 AA holder out a little bit it will fit without any addon board. | |
| Posted by: LaPorta on 2020-10-14 17:18:33 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. | |
| Posted by: max1zzz on 2020-10-14 18:39:39 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 | |
Posted by: oldappleguy on 2020-10-14 21:39:12 | |
Posted by: tt on 2020-10-14 22:50:29Someone on this forum (I can't remember who) made replica boards a while backYeah, 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. | |
| Posted by: karrots on 2020-10-15 01:51:03 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? | |
| Posted by: MrFahrenheit on 2020-10-15 13:14:47 My Mac II machine has one of these boards on it. I was surprised when I popped the cover and saw it. | |
| Posted by: tt on 2020-10-20 10:28:53 @karrots Yeah, send me a PM. | |
Posted by: DeChief on 2021-02-09 19:07:24View attachment 38102 Does anyone know what the capacitor is for? | |
| Posted by: ymk on 2021-02-09 19:09:59 Guessing here... to retain the memory through a battery swap. | |
Posted by: DeChief on 2021-02-09 19:11:41Guessing 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... | |
Posted by: CC_333 on 2021-02-11 07:42:42Does anyone know what the capacitor is for? 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 | |
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