Cleaning an IBM 5150, And The Perfect Period PCB Soldermask
Cleaning an IBM 5150, And The Perfect Period PCB Soldermask
Wikipedia says “An IBM PC compatible is any personal computer that is hardware- and software-compatible with the IBM Personal Computer (IBM PC) and its subsequent models”. But what does this actually mean? The obvious literal interpretation is for a device to be PC compatible, all software originally written for the IBM 5150 must run on it. Is this a reasonable definition? Is it one that any modern hardware can meet?
For the final day of #DOScember 2025 I give you part 4 of my #IBM5150 restoration video series. With lots of help from the community, I try to trace down what IC(s) are keeping my IBM 5150 from booting.
The IBM 5150 will return in 2026 for Part 5!
Happy Jank-tastic New Year!
Something seems off with the AMD 8088 CPU at U3 on my #IBM5150 that I am trying to restore for #DOScember.
Pin 22 Ready should go HIGH when the CPU is ready to start executing code. The view on the oscilloscope shows high then low. Not good.
One final #DOScember 2025 video in the works. Stay tuned. 🎄🎁
🎥 New #IBM5150 Video Drop 🎞️
In Part 3 of my IBM 5150 restoration series for #DOScember, I check for the 4.77MHz clock signal on the motherboard and give it an ultrasonic bath.
(Sorry about the choppy audio, not sure what went wrong.)
My #IBM5150 motherboard is looking much better after an ultrasonic cleaning.
Follow my #DOScember playlist for more Big Blue #IBMPC shenanigans all month long!
https://youtube.com/playlist?list=PL2EnQlr6_Fo7Qe0rV5y_c9EPqy4zu6s6B&si=qrvzPVR0Dnl46fn_
🎄Merry Jankmas 🎁
#BTS #DOScember #IBM5150 video teaser trailer
🎄 Merry Jankmas! 🎁
Well, I had the dip switches set incorrectly and it was trying to test memory that didn't exist. Fixed that and the floppy drives seem to work as well...
I'm also impressed that the Dell System 200 DOS 3.3 Master disk (circa 1987) is still working.