well I’m gonna look for a few more minutes but I can already tell you 2 things, I think you’re going to need a professional to troubleshoot it and that plus the cost of repair is going to cost you more than buying a record player. If you love the thing, I’d invest in it otherwise the cost will exceed the benefit.
I’m still searching though, there’s a lot of these montgomery ward airline radio / record player consoles but nothing so far that matches the part number wg-2375A
Alright so while I’m finding zero on the specific model, here is a troubleshooting for hum in a vintage tube console radio/turntable video and in general, this might help give you an idea of whether or not you feel like you can get into it on your own