I needed a rare clock chip used in a 1970's Texas Instrument watch to repair a piece of vintage HP equipment. I could only find one from some Chinese vendors. But the chip swap did not repair the thing. Did I get a real or a fake chip? Only one way to find out: look inside.
I have since managed to reverse engineer the chips make them work, see here: • LED watch chip from Texas Instruments...
And I eventually repaired all my HP clock modules in an epic repairathon: • HP 98035 Clock Module Repairathon
Our sponsor for PCBs: https://www.pcbway.com
Support the team on Patreon: / curiousmarc
Buy shirts on Teespring: https://teespring.com/stores/curiousm...
Learn more on companion site: https://www.curiousmarc.com
Contact info: https://www.youtube.com/curiousmarc/a...