Symptom 3: Sound But No Picture (Screen Flash or Dark Screen)
Identify the pinout of the main wire harness connecting the power supply to the mainboard (usually labeled CN400 or similar). Check if the 12V_STBY rail is stable.
The primary regulation is handled by a high-efficiency PWM controller IC located on the solder side of the board. Vestel frequently uses controllers like the or similar chips from Silergy or Leadtrend in this topology. The PWM IC drives a high-voltage MOSFET. vestel 17ips62 schematic
The secondary side of the 17IPS62 is where the LED driver circuitry resides, typically built around a dedicated LED driver IC such as the AL3066 or MP3398A. This circuit takes the +24V rail and steps it up to the higher voltage required to drive the series-connected LED backlight strips—often anywhere from 40V to over 70V depending on the television model and LED count.
Includes the main switching MOSFETs (e.g., Q13, often a FQPF8N60C) and controller ICs. Symptom 3: Sound But No Picture (Screen Flash
The 17IPS62 is an all-in-one power solution. It integrates the primary AC-to-DC conversion, regulation circuits, and the LED backlight driver onto a single printed circuit board (PCB). Key Technical Specifications 220–240V AC (Standard European/Asian grid)
Vestel 17IPS12 no backlights , fault finding to component level Vestel frequently uses controllers like the or similar
The 17IPS62 features an integrated boost-converter circuit to step up the 12V rail to the high voltage required by the LED backlight strips.
The Vestel 17IPS62 seems to refer to a specific model of a display device (monitor) produced by Vestel, a company known for manufacturing electronics and home appliances. Without a direct link to the schematic, here are some general points you might consider:
Powers the TV's micro-controller and infrared receiver when the TV is "off."
While the physical layout may vary slightly, the schematic flow is as follows: