E75 Xbox 360 error code | Tinker Mods
Let's see what's wrong
This error is labeled as the southbridge being unable to communication with the Ethernet chip. This issue is rather uncommon, but happens none the less. So let's go ahead and dive deeper.
No Ethernet
Put simply, the E75 error code is usually caused by a bad Ethernet chip. This would require a replacement of that chip. This would be a very complicated repair by a professional. Technically, the southbridge chip can also cause an issue here. This could be repaired with a reflow, reball, replacement. For the less experienced repair man, replacing the motherboard would be your last option to get this E75 error to clear out.
