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By: Nicolas Foster
Since Part 1, I've made several enhancements to the system. I've replaced faulty components on the mainboard and upgraded the case.
One persistent issue I encountered was with the DIN 5 pin connector on the mainboard, which exhibited considerable inconsistency. Upon booting the system, I would frequently encounter "no keyboard attached" errors. To resolve this, I'd have to repeatedly unplug and plug in the DIN to PS2 converter until the system recognized a keyboard, a process that often-required multiple attempts. Naturally, I suspected a faulty connector and promptly ordered a batch of 5 pin DIN connectors to address the issue:
I employed a soldering iron, flux, and copper solder wick to desolder the defective DIN connector from the mainboard. Subsequently, I carefully positioned the new DIN connector onto the motherboard and utilized solder and flux to secure it in place. Since replacing the DIN connector, the keyboard issues have been completely resolved, and the new connector consistently functions without any problems:
In Part 1, I utilized a standard AA battery connected to battery jumpers on the motherboard. While functional, this setup proved to be unreliable and short-lived, often exhibiting inconsistency. Additionally, replacing the battery was cumbersome. To address these issues, I devised a solution involving the use of a CR2032 battery, commonly employed as a CMOS battery in modern desktops.
After conducting a search on Amazon, I identified several suitable options for CR2032 batteries and eventually selected a button battery holder. This choice offered the advantage of easy battery removal and promised a more consistent experience overall:
I also purchased some Velcro stickers so that I could mount the battery and have it more mobile:
After acquiring all the needed components, I then soldered the battery holder onto the mainboard:
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