E 73 ,i fixed one.

Hello my cousin has a XBOX 360 which lately got the E73 error. He has a PREMIUM version. We just heat up the XBOX ,turn it off ,and after an hour we turned it on. BUM a miracle ,it worked again.

Now i have one of the oldest version of XBOX ,well the first version arcade core 2 duo. I have the same error, we tried the same as the above,but it doesn't work here. Mine has not an ethernet card(a technician removed it).

If i get a new ethernet card ,is there any chance will it work?

E73 Error Definition - I/O Hardware Error - Couldn't calibrate HSIO Bus from edram: this error is likely caused by a problem with the Ethernet port or supporting control devices.

Try this for a solution - http://xbox-experts.com/e/errorcode.php?e=E73