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Hi! I'm thinking about adapting my LCs to use CR2032 instead of the prone to leak 3.6V batteries. However, I looked into the schematic and realized there is no diode preventing reverse voltage, only a 1K resistor. I powered on one of the Macs without any battery in the slot, and I measured...

Hi! I have an old Apple Keyboard II with some keys not working. For example, the entire column of the 2 key does not work. I opened the keyboard and I'm testing the membrane. Effectively, from one of the contacts of the 2 key to the connector, there is no conductivity. My question is… why...

Hi! Restoration of an LC III is going great, board recapped is working perfectly! Now, the top shield is in a sad state (see photo). What's the best way to clean this? Assuming I separate the shield from the case, would a vinegar bath for a few hours work? What techniques do you use? The video...

Hi! Just wondering if anyone has ever seen an LC 475 doing this: (sorry, no idea why it ended up a short instead of a regular video). From what I can understand (it's really hard to see) both the color and the image seem messed up (the overall idea of the image is there, but kinda blocky)...

Hi! I have 3 LC PSUs here (just my luck, all different, DynaComp, Astec and TDK). I'm going through the process of picking which caps to buy and my question is related to ESR. From what I understand, going for the lowest ESR available might not be the best option since PSUs may depend on the...

Hi! I have one of these things here. Until today I thought it was the right adapter to connect a DB-15 Mac to a VGA display, but it seems it's built for the exact opposite: connect a VGA computer to an Apple DB-15 display. My question is: if I buy two gender changers (one for DB-15, and one...

Hi, I'm eyeing a 475 being sold online. The owner says he sold the monitor already, and the Mac is broken, as it showed a bomb. I asked (with screenshots) if it was the system error bomb or a sad mac, but he says it shows a "little round bomb and an X below". In all my years of using Macs...

Hi everyone! Just announcing that a few days ago I published MacDVI, the source and documentation for a small project I've worked on on my free time as part of moving my Mac Plus to an LCD instead of the CRT: https://codeberg.org/arroz/MacDVI This is a DIY project, that anyone can build with a...