Most technicians ignored that. But Alex remembered a bricked Y720 that wouldn’t power past 0.2A. He measured resistance between and ground — shorted. The short led to a capacitor near the GPU, but that capacitor was fine. The real culprit? A leftover solder bridge on R1401 ’s pads, permanently disabling the JTAG isolation and holding the PCH in a debug state.
If the standby LED is off, the issue is in the Input or Standby stage. 17ips72p schematic
When you look at the , you will see it divided into several distinct stages. Here is how they function: Most technicians ignored that
on Scribd provides a multi-page breakdown of the primary and secondary stages. Common Faults & Troubleshooting The short led to a capacitor near the
When you open the 17IPS72P PDF, it typically contains 40-60 pages. Here is what to look for on the most critical pages:
The large 450V capacitor (often C164 or similar) that stores the 400V DC required for the rest of the circuit. 3. Secondary Voltage Rails