Hello, I hope you guys can help me. I just picked up a Donkey Kong Junior today for only $50. The cabinet is in good shape and the guys said the machine works sometimes. I still couldn't pass it up for that price. I get home and turn it on and picture is skewed. It never straightens up. It begins a slight roll after sitting for a while. Also, it makes a blurp of noise when powered on, but no sound afterwards. I'm already reading about the cap kits. Is that what I need? Or is the monitor shot? Thanks so much and I look forward to learning a lot on here.