For reference, here is the full pinout of the BD9766FV (24-pin package):
Some repair guides suggest connecting specific pins to ground via a resistor to "blind" the IC to faults. For example, some variants of similar ROHM ICs use a LED to ground or a specific resistor (e.g., 10k) on a protection-related pin to keep the backlight on during testing. bd9766fv protection pin
Once a fault is confirmed (based on the SCP capacitor timing), the IC remains in a shutdown state until power is cycled or the STB pin is toggled. Troubleshooting & "Protection Bypass" For reference, here is the full pinout of
These are used for under-voltage and over-voltage detection for the respective channels. Troubleshooting & "Protection Bypass" These are used for
The IC is designed to protect the inverter system through the following mechanisms:
The BD9766FV inverter IC protects LCD backlights by shutting down when faults are detected, which can be diagnosed by bypassing the SS (Pin 20) or SCP (Pins 21-22) pins. Technicians often connect an LED between Pin 20 and ground to force the IC to stay on, enabling identification of faulty lamps or transformers. For technical details on the protection pins, visit Scribd . AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 3 sites Backlight IC Protection Pin Guide | PDF - Scribd Search… * Quick links FAQ Cash Register Login. * Board index ‹ LCD/LED TV Section ‹ TV Repairs Forum ‹ Tips & Tric... Scribd LCD driver protection pin Bypassing in English Jan 24, 2019 —