I've found an old low end turntable on a garage sale, and I was trying to get it to work with some of my LPs. It's an AKAI AP-M393, very low end and very basic.
I've realised I need a phono preamp to be able to use it, but I don't have any. I have, however, plugged it a guitar amp (which has an included preamp) and I do get sound from it, albeit nothing discernible, just a screeching high pitched noise, and it made me wonder if the turntable was not damaged.
So how exactly do I perform further testing? Can I even use the guitar preamp (I don't think it has RIAA equalization, or if the signal levels from a guitar pickup and a preamp are even comparable)? Or is the problem with the turntable belt/cartridge? Can I plug it to an input audio jack on a computer to do some testing?