0023 Xbox 360 secondary error code | Three red rings guide
An issue with the clock
The 0023 secondary error code for the Xbox 360 console typically deals with the clock chip not responding. This issue is a very uncommon one and would require the average user to replace the motherboard with a working one. Additionally, this is one of the few errors that differ between the Xbox 360 phat console and slim version. This error on an Xbox 360 S would require you to replace the power supply or check components on the eDRAM for damage or missing parts. However, I will dig deeper on this one for the more advanced users below.
For the PHAT 360
The Xbox 360 phat is usually a clock issue. The first version of the motherboard (Xenon) has a single component that would need extra checking. This is essentially the ANA back up components. Otherwise this would focus around the ANA/HANA chips themselves. Due to most communication passing from the ANA/HANA to the southbridge, the southbridge could also be at fault. A reflow of the southbridge could fix your problem. Otherwise the 0023 secondary error code would be a death sentence for the normal person. If you are unfamiliar with the reflow process, you should consider finding a replacement motherboard to solve your problem.
For the SLIM 360
As a rarity, the slim Xbox 360 deals with a different problem when you have the RROD with a secondary error code of 0023. Sometimes this could be a bad power supply/brick. Try replacing that first to eliminate it as your issue. You could have components of the eDRAM damaged or missing as well. This would require a diagram or picture of a matching motherboard to compare to your own. If any components are missing you can replace them based on the other console you are referencing.
