If you have this error and you know for sure that the console has never been modded, check all the capacitors (tall cylinders) around the CPU for leakage and also check to make sure the tops of them are perfectly flat. If you rub your finger around on the X in the middle, you can usually feel the difference from one that is not flat. If they are bulging at all, then this is your problem and then they need to be replaced.
Capacitors can swell or even blow up when an Xbox 360 system board has been pre-baked (heated) at too high a temp or has been reflowed multiple times. (YES! I've had it happen before. Always wear eye protection when performing reflows or reballing of any system board. The liquid inside a capacitor is very acidic and can blind you!)
When caused by a blown capacitor, this error will not arise until an update is performed. When the update package goes to blow an eFuse in the CPU's OTP area and the capacitor which supplies the voltage to carry out the process is blown or defective, the console will stall on error E80 (Wrong LDV Version (LVD = Fuse Count)).
Replacing the blown capacitor will allow the update process to continue as normal.
This post has been edited by neildmd: Jun 28 2011, 11:45 PM