I recently found a dusty old NES, controller and some games (score!). The power light was blinking when i hooked it up, so i took it apart and cleaned it (and also disabled the 10NES chip). Put it back together, cleaned the game cartridges and hooked it all up. Now the power light is solid red, but the TV screen is a solid blue/purple color. I connected the NES to my TV via an AV Cable RF Box. Do I need a different kind of connector, or is it something else wrong with a component in the system itself? thanks in advance!