New NES 72 Pin Connector:
NES
blinking lights or blank screen are usually caused by bad connection
between cartridge and console. Bad connection is caused by a worn out 72
Pin connector from inserting and removing game cartridges repeatedly
over time. With a new 72 pin, games should load quicker assuming that
game cartridges are cleaned. Some older game cartridges may need a
little wiggle as the cartridge itself is worn and not because of the
console.
Why Disabled Lockout Chip:
The
lockout chip in the NES was included to prevent pirated games from
running in the console. It is also the reason that you get the blinking
screen and often malfunction between the console and game cartridges. If
the console's lockout chip and the cartridge's lockout chip don't
communicate, then the game won't play. Half the time, it's not because
of dirty contacts. The games would run fine if it weren't for the
lockout chips. Disabling it means a much higher success rate.