0102 Xbox 360 secondary error code | Three red rings guide
An issue with your ram... or is it?
One of the most common secondary error codes on the Xbox 360, the 0102 is directly related to the famous RROD on the console. The technical read out on this problem says the RAM read process was delayed. However, I would say this issue is much more commonly caused by the GPU chip itself. So, let's dig deeper and learn more!
Start with the GPU on this one
Since the 0102 secondary error code is so commonly caused by a cold solder joint under the GPU, go ahead and start with a reflow on that chip. A reball or replacement could also work and may sometimes be necessary. Your Xbox 360 console communicates to the RAM directly through your GPU, so it makes perfect sense the issue could be caused by it. If these kinds of repairs are beyond your ability, you could also try an X-clamp fix to get results.
Could still be the RAM
While this would be much less common, if the GPU was repaired and you still have the 0102 secondary error code, the RAM itself is to blame. Try the same steps you would with the GPU as listed above to try to get results. Lastly, if you have tried everything, or, if you aren't comfortable trying those kinds of advanced repairs, you would need to look at replacing the motherboard entirely.