The wires are not connected, need to reconnect

It wouldn't cost you that much. You can acquire some solder, flux (that will help things go much smoother), wire and a soldering iron, for quite cheap. Even the desoldering shouldn't be too complicated.

Here's a video

https://m.youtube.com/watch?v=16X9IAc9bl...

I'll give you a list, from iFixit, or you can scour eBay and find the same things

[リンクされた製品が存在しない、もしくは無効: IF145-018]

This is "non-leaded" solder, that's the good stuff

Solder Leaded 63/37 Rosin Core

Tack Flux SMD291 no clean 5cc ROHS

https://www.google.com/search?q=radio+wi...

Make sure to "tin" the areas and wires, prior to installing the new wires. You'll want to add a dash of flux, then add some solder to the wires, then solder the wires to the board