AV Famicom Laser marked CPU and PPU
Here is a pic of the cpu i could not get to work right with the hi-def nes kit:
Here is what they normally look like:
Other than the yellowish color instead of white like all the other chips, the other way you can tell for sure they are laser marked is if they are harder to read straight on and easy to read from an angle.
Here is the video I did showing how it messes up the hi-def nes kit: