17ips12 Schematic | Vestel

If your TV refuses to turn on, clicks constantly, or has sound but no picture, the culprit is often the 17IPS12 power supply board. This comprehensive technical guide and schematic breakdown will help you diagnose, troubleshoot, and repair the most common failure points on this specific board. 1. Technical Specifications Overview

Low-to-medium wattage LED TVs (typically 22-inch to 32-inch screens)

The PS-ON signal turns on a transistor (Q903 on the schematic), which pulls the relay or main PWM IC's enable pin high. If the main 12V does not appear, check the main MOSFET (Q904) and secondary Schottky diodes (D921). vestel 17ips12 schematic

Features a bridge rectifier (e.g., GBU4M) and large filtering capacitors to generate a high-voltage DC bus (approx. 310V–400V). Provides regulated outputs, typically Backlight Driver:

Use a multimeter in continuity mode. Test the center pin (Drain) to the outer pins of the primary MOSFET. If it reads 0 ohms, replace the MOSFET and the primary PWM controller IC simultaneously, as a blown MOSFET almost always destroys the driver IC. Symptom 2: Dead TV, No Standby Light, Fuse is OK If your TV refuses to turn on, clicks

The is a combination power supply (PSU) and LED backlight driver board commonly used in LCD/LED televisions from brands like Hitachi, Toshiba, JVC, and Finlux. Schematic and Download Links

: The input stage utilizes capacitors and resistors for EMI filtering, followed by a bridge rectifier to convert AC to DC. 310V–400V)

Respect the thick white or black line printed on the circuit board. It separates the dangerous "Hot" primary side from the safe "Cold" secondary side.

What is the on your board (e.g., 23XXXXXX)? What is the brand and model number of the TV?