I recently bought a Darth Vader 2600, and I already possessed 3 joysticks (which I use with my Colecovision) and one set of paddles. There is no problem with the picture or anything else, except for that the joysticks, which all work fine, can only be used to move the character on screen to the RIGHT. The action button works as well, but I cannot move left or up and down. As for the paddles, when I am playing Video Olympics, the red button on both paddles do not work. Yesterday, when I tested the system, i was able to move left and right with the joystick, but still not up and down. Yesterday, the red buttons on the paddles worked perfectly. But now, I can only move right and use the action button on all the joysticks, and move back and forth with the paddles. This is the case with all the games I tried. The problem here is clearly with the system, but what exactly is wrong and what can I do to fix it?

P.S Sorry if my terminology is not up to snuff, I'm more of a 16-bit gamer.