fixing am radio?

Well OK, you said "soldering." Just what experience do you have in electronics? Do you have a basic understanding of analog transistor circuits and how to troubleshoot them?

Does the radio do ANYTHING, that is,..................

pop (thump" in the speaker when power is applied?

make any static, must have an antenna or at least a wire hooked to the antenna port?

I haven't messed with these in YEARS. At that time it used to be "Sam's Photofacts," as Al Gore had not invented the internet as yet. I don't remember much about these, except that they can be manufactured by different folks, Bendix, Motorola, etc, and I'm sure you'll have to find that out before you can get a schematic.