To My Readers



If this is the first time you're visiting my blog, thank you. Whether you're interested or just curious to find out about PCB reverse engineering (PCB-RE), I hope you'll find something useful here.

This blog contains many snippets of the content in my books to provide a more detailed overall sampling for my would-be readers to be better informed before making the purchase. Of course, the book contains more photos and nice illustrations, as evidence from its cover page. Hopefully, this online trailer version will whet your appetite enough to want to get a copy for yourself.

Top Review

I started doing component level repair of electronics with (and without) schematics more than 40 years ago, which activity often involves reverse-engineering of printed circuit boards. Although over the years my technical interests have shifted into particle beam instrumentation, electron microscopy, and focused ion beam technology fields, till this day——and more often than not——PCB repairs have returned multiple multi-million-dollar accelerators, FIB, and SEM instruments back to operation, delivering great satisfaction and some profit.

Many of the methods described by Keng Tiong in great details are similar to the approaches I've developed, but some of the techniques are different, and as effective and useful as efficient and practical. Systematic approach and collection of useful information presented in his books are not only invaluable for a novice approaching PCB-level reverse engineering, but also very interesting reading and hands-on reference for professionals.

Focus on reverse engineering instead of original design provides unique perspective into workings of electronics, and in my opinion books by Keng Tiong (I've got all three of them) are must-read for anybody trying to develop good understanding of electronics——together with writings by Paul Horowitz and Winfield Hill, Phil Hobbs, Jim Williams, Bob Pease, Howard Johnson and Martin Graham, Sam Goldwasser, and other world's top electronics experts.

Valery Ray
Particle Beam Systems Technologist

Friday, March 13, 2026

The Quiet Years


Days turned into weeks. Weeks into months. Months into years.

The long, stable decades passed quickly—not in a blur, but in a rhythm. The work, the colleagues, the daily routines. Projects started and completed. Problems solved and new ones appearing to take their place. Engineers came and went, some staying years, others moving on to greener pastures.

I remained.

Not because I lacked ambition. Not because I couldn't imagine doing anything else. But because this work, this place, this community of problem-solvers—it fit me. It suited the way my mind worked, the way I approached challenges, the way I found satisfaction in the careful unraveling of mysteries.

Yet in the midst of all this, a subtle shift was taking place.

I was moving, slowly and without quite realizing it, from simply doing the work to understanding that I had something to share. A deep well of knowledge that others might need. Lessons learned through years of trial and error, success and failure, patient observation and sudden insight.

The question was not whether I had something to teach. The question was who would want to learn.

In my twenty-five years at ST Electronics, I had only two true apprentices. Not for lack of opportunity. A few showed passing interest. But sustained engagement? The kind that transforms casual learning into deep mastery?

Only two.

One was a sixty-year-old engineer. The other was a young engineer half his age. They could not have been more different—in age, in experience, in life stage. But both, in their own ways, inherited pieces of what I had to offer.

Teaching isn't just about transferring knowledge. It's about witnessing. About seeing the spark catch on in another person and letting them know you've seen it.


 

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