Quick question regarding vintage radio

Hi, I’m very new to this site and joined to ask a quick question regarding my vintage midland international walkie talkies. The model I have is a 13-046 and they used to work a while ago, but they dont turn on anymore and dont know what to look for if anythings broken on them. If anyone knows where I could go to ask someone or if someone knows about what to look for I’d really appreciate it!!!