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"Build quality" is a really weird criteria for choosing an antique computer. A lot of the most beloved home computers were absolute...

33 ohm resistor pack looks like it's pulling bus lines up or down. Those VIAs probably go to a ground plane or power plane. If the VIAs...

When power components burn like that, they usually weld themselves to the board. Getting them off without causing more damage, even with...

VCF West 2025 Consignment. Get your items into the system! Print your labels ahead of time! Buy and sell treasures. More info here...

If you can't find the original BIOS, go on TRR and find a motherboard with the same chipset and similar configuration and try cross...

Yes, I will try and trace the +12v to Q11's collector. I'll also check again to ensure I am measuring the right points. The power supply...

Thanks for the great info and resource site! I will give this a shot. Been away for a bit, but am now back and will reinstall it in my...

Unless I'm missing something, what you've photographed is a WDFN-10, not a SOP-8. Happy to help!

Thanks, I found the schematics in the hardcopy manual and the PDF version. 1) Voltage across C11==~1.9v (starts off around 1.80 and...

Thank you, I will try it.

Not specifically what you've asked for, but maybe this would do what you need? https://archive.org/details/tadpole-img

Thanks AL, the scans look great!

are you in a hurry for these? we probably have them in the unsorted boxes of DEC paper tapes from The Computer Museum

That error screen is main RAM (low bank of 16K). I will have a look at which bit/bits are at fault tomorrow morning. But you should...

... I think the first time I ever went into one of the Apple-centric shops was when I was given an 800K Mac floppy disk that had a...