My Mini 10 arrived as I left for vacation. I used it when I got back and found that sometimes the unit, not the speakers, emits a crackling noise on startup, shutdown and sometimes at random. After 4 lengthy chats and 2 repair visits with Dell in which they replaced the speakers (1rst time) and found nothing wrong (2nd time) I asked for a return ticket and got turned down.
When does this happen? The worst way, inconsistently. Sometimes I use it for an hour or 2 then suddenly it starts. Sometimes during startup and sometimes during shutdown. Where does the sound occur? Not from the speakers, it sounds internal. I finally got a recording of the sound (!!).
This is my 7th or 8th Dell unit and I am really frustrated. Yes it is still under warranty.