PlayStation 3 (Fat Model)

''This page covers the original "Fat" PlayStation 3 models and some information on the Slim and Super Slim models. For additional information on models other than what's listed here, see PlayStation 3 Slim or PlayStation 3 Super Slim.''

Models
There are 12 different models of the original PlayStation 3 Fat. At the end of each model number is a two digit suffix that indicates the region that the model was made for. The tables below give a brief overview of every fat retail PS3 ever released alongside applicable regions and their suffixes.

PlayStation 3 Super Slim Model list
Note: The NPX-001, PPX-001, PQX-001, RTX-001 and REX-001 motherboard revisions all feature a 28nm die shrunk RSX packaged on a smaller substrate layer, which uses half the number of RAM chips of the previous 40nm design. In addition, the CELL's substrate layer was reduced in size on the PPX-001, PQX-001, RTX-001 and REX-001 revisions; however, the die size appears to have remained unchanged at 45nm. See:

Diagnosing the YLOD (Yellow Light of Death)
All fat PS3s can suffer from the Yellow Light of Death. Unfortunately, a YLOD doesn't really tell much, other than a failure in the hardware initialization phase has occurred. This can mean anything from a dead GPU to a dead capacitor supplying power to the southbridge. To really know for a fact where in the  phase it failed, you'll need to solder a UART connection to the system controller (a.k.a  ). For now, follow the documents included in this repository

Deep dive video on YLOD failures