crwdns2934241:0crwdne2934241:0 Doc Brown

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I replaced a 72 pin connector, purchased from Culsoms Original NES on ebay. I had tried to clean the old one with peroxide.  I also tried a fine grit sand paper (suggested on youtube) With the new pin, I got a solid purple screen with one game and a flashing purple screen with another game.  These are my only two games (mario bros/duck hunt and mario bros 3) Suggestions?

crwdns2915684:0crwdne2915684:0:

open