| General > General Technical Chat |
| Laser-ing the IC markings off on a budget. |
| << < (7/17) > >> |
| mnementh:
I blame the tech reference supplied with this service procedure. ;) mnem >:D |
| SilverSolder:
How hard is it for someone who really wants it, to identify a chip even if the markings have been blitzed? |
| Simon:
--- Quote from: mnementh on March 23, 2021, 05:38:27 pm ---I blame the tech reference supplied with this service procedure. ;) mnem >:D --- End quote --- Hey, I once had to do a rework instruction for a customer which literally read: remove the screws, lift lid and rotate 90 degrees, place lid on base. Re-insert screws..... |O Basically they did not want to admit that they had been inside it and they put the lid back on wrong so it went political. |
| mnementh:
Addendum: Remove screws. Lift lid. Locate and remove screws dropped inside unit. Rotate lid 180°. Reinstall lid. Reinstall all screws. :-DD mnem |
| Syntax Error:
I am sure if the OP posted the schematic minus values to the EEVBlog Forum, it would take about six hours before someone not only identifies the parts but, suggests improvements! There is no counter measure to the reverse engineering of physical hardware. Afterall, it's how many young EEs learn to be ancient EEs. 'Probbing' with a multimeter is also the bed rock for developer communities such as OpenWRT. Even if you burried the tracks inside a multi layer board, someone somewhere (in China) is going to xray the board and have an Altium clone out by next Tuesday. You can ask the chip vendor to send 'black box' chips with pre-flashed firmware and the SPI and Jtag pins dead, but then they might insist on a MOQ of 10,000 units. So try floating that concept past middle managers suffering budget fear. |
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