Hi, I had simulator problems with my 2 A4000’s. What I did was get the rtc kits from amiably, I guy is selling those on that forum. If you want I can try to get his name. After replacing the rtc circuit the real-time clock was working again. But while replacing all the components I also checked the traces using a multimeter. This part of the board is very close the the famous battery and there is a big change that some of the traces are broken. You can fix the with some wires. This was what i did. Good luck.
Edwin
