18+ This site contains sexually explicit material.
The TV turns on, the standby light changes color, sound can be heard, but there is no picture. (If you shine a flashlight closely at the screen, you can see a faint image).
Flash a flashlight closely against the dark screen while the TV is on. If you can see faint images or menu text, your mainboard is working, but the backlight is off.
The secondary side provides the DC voltages that power the main board and audio circuits. 17ips62 schematic diagram
Protects the TV from power surges and prevents electromagnetic interference from feeding back into your home's electrical grid.
Turn the TV on and watch your meter closely at the LED output connector. If the voltage spikes up high for a brief second and then drops back down to a baseline level, the 17IPS62 circuit is functioning properly, but it is detecting an open-circuit fault caused by a burnt-out LED strip inside the panel itself. The TV turns on, the standby light changes
What (if any) have you taken so far on the output rails? What is the exact model of the TV you are working on? Share public link
High-resolution circuit diagrams are available on Scribd . If you can see faint images or menu
| Output Rails | Components | Typical Voltage | Application | |--------------|------------|-----------------|-------------| | 12V rail | D7, D8, D9 (Schottky diodes) | 12V | Main board, audio amplifier | | 24V rail | D23, D24, D25 (Schottky diodes) | 24V | Some backlight inverters / older models | | 40V rail | D23, D24, D25 (alternate configuration) | 40V | LED backlight driver input |
One forum member documented missing 12V voltage (only 0.35V present at D7-D9) while the 24V/40V rail was present at 23.05V – a classic symptom of a failed secondary rectification stage or an open feedback circuit.
The 17IPS62 is a reliable board but has a few well-documented failure modes.