[ Power Input: Internal PSU (12V) ] | v [ Standby Power Management IC ] / | \ v v v 5V Standby 3.3V STBY 1.1V STBY | | | +------------+------------+---> [ Southbridge IC (Standby State) ] | (Power Button Pressed) | v [ Main Power Regulators (VRM) ] / | \ v v v 12V VCC GFX/CPU 1.1V SoC | | | v v v [ RAM ] [ APU ] [ Southbridge ] | v [ Retimer Chip ] ---> (HDMI Out) 1. The Power Input Section
Trace the and the HDMI ESD protection arrays . Disc Drive Not Ejecting
The Xbox One S APU is a large BGA. Voltage rails pass through vias under the chip. A boardview lets you probe the top-side via that connects to a bottom-side BGA ball. If you see a short on the via, you know the APU is likely dead (cracked solder ball).
If using the boardview to find a short via voltage injection, never exceed the native voltage of that specific rail. Injecting 12V into a 1.1V CPU core rail will permanently destroy the main processor. Conclusion boardview xbox one s
Often, a dead HDMI chip will take down its local power management components. Technicians frequently use the boardview to trace the 1.1V and 3.3V power lines feeding the TDP158 to ensure the chip is actually receiving power after being replaced. How to Open and Use an Xbox One S Boardview
Example custom annotation:
Blown ESD protection diodes or a failed retimer chip. 3. No Display / APU Failure (No Signal) [ Power Input: Internal PSU (12V) ] |
Component-level motherboard repair carries risks for both you and the hardware. Ensure you have the proper setup before beginning:
When you click on a pad or component in a boardview reader, the software highlights every other interconnected point on the board. This feature is incredibly valuable for detecting broken traces or isolating short circuits to ground. Essential Tools for Reading Boardview Files
The TDP158 HDMI retimer chip (U7A1) fails due to ESD or heat. Voltage rails pass through vias under the chip
Elias touched the probe of his multimeter to the 5V rail on the physical board. The multimeter beeped— a steady, low tone. A dead short to ground.
Boardview files come in various proprietary formats (such as .brd , .cad , .bv , or .fz ). To open them, you will need to install a compatible, lightweight boardview reader. Popular choices in the repair community include: