Rich Grise wrote in
news
One of them has Motorola logo, one National Semi. Other than that,
the part #s have been successfully rubbed off. A ghost of them
remains, but an electron-scanning microscope might be needed... (c;


How about some of that magickal fluorescent spray stuff from CSI? :-)


I've used white spirit, a metal halide lamp, and the lens from an old Zent
35mm camera as a high powered magnifier. I got most of the IC numbers from
a LambdaPro laser PSU, and LambdaPro grind them off to hide them. If
they've only been rubbed enough to obscure them a bit, this should work on
them. Try with different light and viewing angles.