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A while back I was researching information on building PRAM battery replacements for my PowerBook 5300 and Pismo and ran across this PowerBook PRAM Battery guide written in German. Perhaps this might help? The original color PDF is too large to add to this post, so I attached a grayscale...

Hi Colin - Will Jacobs has a YT video talking about artifacting caused by a board error, here: . But since You are talking about simasimac, this YT video shows troubleshooting and resolution due to poor connections: Like others have posted above, your likely culprit is a poor connection...

Hello, fellow Tinkerers! Although real life has intruded on my tinkering over the last few months, I’ve managed to squeeze in a small project or two. One of my background projects during this low key period has been testing OpenCore Legacy Patcher (OCLP) on a variety of unsupported MacBooks in...

@Tony359 on YT posted a video recently about restoring a drive on a //c, perhaps there are some pointers that might apply in your case? I’ve bookmarked his video for later reference when I return to my //e which is showing very similar behavior that he covers in his video.

I take it that your IIci does not play those chimes without the cache card? In my experience those chimes indicate bad RAM. Interesting that with my bad cache card I don’t get the chimes, just a hang during the boot process with the IIci stuck on a black screen. Paging @Garrett to weigh in on...

I recently restored a White iBook G4 (PowerBook6,3) from 2003 sporting an 800 MHz PowerPC 7457 (G4) by adding a modern SSD replacement for the missing hard drive, replacing the malfunctioning Combo CD/DVD drive, and giving it a through cleaning inside and out. The iBook G4 required almost...

I’ll add my own SRAM chip list for comparison. 28-pin (4) CACHE 24-pin (3) TAG Card 1 (working) P4C164 - Performance Semiconductor P4C116 - Performance Semiconductor Card 2 (non-working) CY7C185 - Cypress Semiconductor MT5C1608 - Micron Semiconductor i wondered if the...

Not yet, Garrett. I wondered if the MT-branded 24-pin TAG SRAM on my bad cache card might be the problem since MT-branded RAM is so often a failure point in 8-bit computing. I used the guide Kai shared to identify a replacement with the same pinout and installed them on my cache card...

I restored a Classic II about a year ago that exhibited the gray screen but no cursor. I wrote about my experience here, see if this might help at all. https://tinkerdifferent.com/threads/adventures-in-classic-ii-repair.1149/

Because you put in a known good board and the CC worked, that also rules out the large connector as a problem, something that I encountered in the past. Beyond @Mu0n‘s suggestion about vias, I’m not sure what else to try other than EGRET and/or sound chip replacement.

That did the trick. Thanks! (Sent from a MacBook2,1 running 10.7 and SeaLion - works like a charm!)

Works great on my MacBook2,1 running 10.7 Lion. Only saw one minor graphical glitch on the Quit dialog box where the bottom of the Quit, Cancel, and Save and Quit buttons are chopped off.

Cool, I’m going to follow this thread while I work on my Apple //e. Mine has rusty screws although the chassis, PSU, and logic board appear fine.

My IIci restoration project last summer also required a repair in that exact same area with the same chips. You can read about it at this thread here. I’m by no means an expert, but it wasn’t too daunting of a task. My IIci is purring like a champ.

I don’t see any active IIfx sales on FleaBay currently but my history over the last month shows non-functioning for parts only IIfx listings all in the $200-$300 range. I’d say our hobby has driven up the prices in recent years. And to think that back when NASA issued me the new IIfx in 1990 it...

Here is the same for US eBay buyers https://www.ebay.com/itm/353675714585?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=z85Zunj2Qd-&sssrc=2349624&ssuid=mmdlzm_0q_k&var=&widget_ver=artemis&media=COPY

For #MARCHintosh 2023 I performed the stereo mod to the analog board of my Color Classic Mystic. James Wages @JDW has an excellent tutorial on his YouTube channel. I salvaged the amplifier chip from a donor CC analog board and ordered the passives from Mouser. I also salvaged a matching 16...

I have not looked for a replacement jack yet. Perhaps @3lectr1c has some insights?

FWIW, I have not recapped my PowerBook 5300cs. I took mine completely apart for cleaning and inspection about a year ago. The electrolytic cap on the logic board looked fine (no bulging or cap juice) and the same with the cluster of caps on the DC board. I opted not to do a recap yet. The DC...

I recently restored a Black MacBook2,1 Mid 2007 sporting a 2.16 GHz Intel Core 2 Duo chip. Back in the day, this is the MacBook I really wanted, but since I had a White MacBook1,1 from 2006, I didn’t satisfy my urges back then. Now, I have a near mint condition Black MacBook that I...