Ps42419ha Schematic Work Work Jun 2026

This is the most critical area for initial troubleshooting. It generates a steady 5V standby voltage to power the motherboard before the main power is turned on.

A bootstrap capacitor connects between BST and SW to provide the gate-drive voltage for the internal high-side N-channel MOSFET. Core Schematic Circuit Design ps42419ha schematic work

Generates a continuous low-amperage voltage (usually 5V) to power the TV’s infrared receiver and microprocessor while the set is "off." This is the most critical area for initial troubleshooting