My speaker is blown on my 600, so I can barely understand anything the person I'm talking to is saying. I bought a new speaker, and when I tried to put it in the phone, it would only work for a second. I can move it around and it will sometimes make noise. It almost seems like I'm not getting a good connection between the speaker and phone, but I am. I've checked it it a thousand times now. Do you think my new speaker is bad, or is it something else? Thanks for any advice in advance.