Thank you for your suggestions!

It is starting to look a bit more like the problem might be centered the trimmer capacitor. One user told me to simply rotate that capacitor a bit,
and now the radio works perfectly on FM. SW and MW are still completely dead though... the volume only amplifies the white noise.

Now I'm trying to ID a good source for trimmer capacitors. If anyone has a suggestion, please let me know! I'd like to find a high quality replacement, if possible.

Thanks,

Matt