Hello! I just bought a Realistic LAB-500 at a yard sale for $10 bucks. It works and is in good condition. Since I don't have a phono speaker set up I just plugged it into my TV to test it till an aux adaptor I bought comes. It sounds good but the audio is very quiet. I assume it has something to do with amps or something. I'm new to this! Let me know if there is anything I can do to fix it. Preferably a cheap fix like 35-50$ if possible.