17ips62 Schematic Diagram -

Measure the resistance between the Drain, Source, and Gate pins of the main MOSFET. If you find a near-zero ohm reading between any pins, the MOSFET is shorted. Note: If the MOSFET is shorted, the PWM controller IC is usually destroyed as well and must be replaced simultaneously.

High-value resistors feed a small startup voltage from the main reservoir capacitor to the VCC pin of the PWM IC to initiate switching. Once running, an auxiliary winding on the transformer takes over to provide stable VCC power. C. Secondary Rectification and Regulation (Cold Side) 17ips62 schematic diagram

) back to the PWM IC once the circuit boots up successfully. 4. Secondary Rectification and Outputs Measure the resistance between the Drain, Source, and

: Familiarize yourself with standard electronic symbols. Resistors, capacitors, inductors, diodes, transistors, and integrated circuits have specific symbols. High-value resistors feed a small startup voltage from

Measure the voltage across the main filter capacitor. It should read around DC. If it reads , check the main fuse and bridge rectifier.