I know its not the RAM check because the screen is not displaying anything anymore. As I mentioned earlier, by slightly shaking the computer I can get the CRT to display something. But it is usually just a faint horizontal line. I might be able to upload some photos later.
BTW, I've noticed there is a lack of Classic/Classic II repair information on the web. I guess nobody has ever taken the time to compile a good list of common issues (besides washing the motherboard).