Components responsible for stepping up the voltage to the LED string.
Once the transformer switches, secondary Schottky diodes rectify the voltage into stable DC rails.
This board is responsible for:
When dealing with a faulty Vestel 17IPS62, a few specific components fail far more frequently than others. Use the following matrix to guide your diagnostic process: Symptom 1: TV is Completely Dead (No Standby Light)
This indicates a backlight failure. The 17IPS62 features an over-voltage/over-current protection circuit. If one LED strip fails open-circuit, the driver IC detects the anomaly and shuts down the boost converter immediately. vestel 17ips62 schematic new
Inspect the bridge rectifier diodes. A shorted diode here will immediately vaporize the main fuse.
The 17IPS62 is a combined power supply and LED backlight driver board. Vestel designed this hardware to minimize production costs by integrating the mains rectification, standby power, main DC rail generation, and LED constant-current driver into a single PCB. Core Sections of the Board Components responsible for stepping up the voltage to
The "new" schematic (often referring to revisions like or R4 ) is essential for component-level repair, as these boards frequently fail due to specific design choices. Review of Schematic & Board Reliability
Diodes on the +12V or +5V lines frequently short out. When they short, the PWM controller detects an over-current condition and shuts down, creating a continuous loop of trying to start up and failing (hiccup mode). Use the following matrix to guide your diagnostic
Vestel 17IPS12 no backlights , fault finding to component level
From analyzing multiple failed 17IPS62 boards, these are the most frequent component failures: