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Replace T-CON board. If lines persist, the panel's Chip-On-Film (COF) driver is damaged. Tab Bonding / COF Panel Driver

Solutions for software-related issues like being stuck on a loading logo or non-stop rebooting.

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If a Smart TV turns on, shows the manufacturer logo, and immediately reboots or freezes, the internal eMMC storage chip may have corrupted boot data.

Includes rare for universal Smart TV mainboards and T-CON boards. Replace T-CON board

The document "V7.0 Smart OLED/LED/LCD TV Repair Tips" is a comprehensive professional guide designed for technicians to troubleshoot and fix modern flat-panel televisions

Lines on a display screen are almost always related to data timing or direct physical panel connections. Includes rare for universal Smart TV mainboards and

Measure the PS-ON (Power On) pin on the cable connecting the main board to the PSU. When you press the power button, this pin should jump from 0V to roughly 3.3V or 5V.