If the schematic is working, you should see a stable 12.2V to 12.3V on the yellow wires. Safety and Repair Precautions
Large electrolytic capacitors on the high-voltage side can fail or exhibit high ESR (Equivalent Series Resistance), leading to fluctuating output or startup failure. ps42419ha schematic work
Understanding how the schematic works is essential for repairing this 240W Hewlett Packard (HP) power supply unit (PSU). Primarily used in HP desktop towers, this "80 PLUS" efficient model is known for specific failure points in its standby and primary rails. Overview of the PS-4241-9HA Architecture If the schematic is working, you should see a stable 12
This circuit operates even when the computer is off. It provides the "wake-up" signal power. Primarily used in HP desktop towers, this "80
A small resistor often acts as a fuse for the standby IC. If the IC shorts, this resistor usually burns out as well.