crwdns2934241:0crwdne2934241:0 Jackson Tint
crwdns2934249:0crwdne2934249:0:
I would try using the "broken NES" with the 72 pin connector from the working NES, if it works, thats the issue. if it doesn't, then I would try replacing the mother board or try plugging in the cartridges in to it while disassembled to see if the cartridge loading mechanism doesn't make a good connection.
crwdns2915684:0crwdne2915684:0:
open