Dave Luna

Dave Luna (18)

I'm a dad, husband, computer scientist, and friend to all dogs.

NeXT Megapixel Display N4000 Repair

Last weekend's repair project: A NeXT Megapixel Display with a wavy picture. Before: Wavy, dim, and blurry After: Stable, bright, and sharp! N4000's logic board 1-623-855-12 ESR testing the original capacitors to confirm my suspicions The original 28 electrolytic capacitors I suspected a failing filter…

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Apple Lisa PSU Build

Last year, Santa gifted me a beautiful Apple Lisa 2/10. It came with electrical problems, and I spent weeks unsuccessfully troubleshooting the original power supply. I finally got it working this weekend after replacing the original power supply with Warmech's ATX-based design that I assembled…

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TRS-80 Model 4 Restoration

I restored this TRS-80 Model 4 over the past few months. It arrived with a broken CRT, damaged case and bezel, and non-functional keyboard. Now, it's back to its original, working state after a lot of hours and frustration. BEFORE: A sad, broken TRS-80 BEFORE:…

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Macintosh STINKY/30

Fresh off the workbench: a 35-year-old Macintosh SE/30. The machine had a musty smell before I cleaned it, so I named it the STINKY/30. It booted to a vertical line with no startup sound. An analog board recap later, and it's back to life. I…

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Welcome, TRS-80!

Say hello to my 40-year old TRS-80 Model III! It's operational again and ready to join my computer lab after some restoration.

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