(if anyone's lightbulb above their head is going off now)
pull the ICs from Nintendo carts. the new ICs which are available seem to have a decently high rate of not working or failing over time. since i was left to swap these ICs out on carts myself, I found pulling the Nintendo ones to be worth the extra effort rather than using the new part because of their poor quality. even if the new ICs worked when replaced, it wasn't that infrequent a customer would right back saying, 'hey man, when i turned on my cart today, it is filled with all this 1A crap".
eh, i can't recall how they are marked. not 1134A though... something else. i'm really having some brain farts this morning, meh
edit -- new ones are marked 6735. ones Nintendo was using were '134A' on the bottom line. just from my experience with that, if you can pull an original for the replacement, i'd suggest doing this to save a future headache. maybe its not a quality issue, it could be something like ESD or simply those carts used bad parts sourcing. or were designed incorrectly. don't know, but that singular part was my bane for a while. and putting the nintendo ones on instead solved nearly all those issues.