For technicians troubleshooting LCD/LED TV backlights, bypassing these pins (often referred to as "removing protection") is a common diagnostic step to determine if the IC or the lamps are at fault, though this backlight protection guide notes that this should only be done for testing as it disables safety limits. BD9766FV - Mouser Electronics
In repair scenarios—particularly for older Samsung LCD TVs—technicians sometimes seek to protection to identify a faulty transformer or lamp. bd9766fv protection pin
While primarily for sequencing, this pin prevents current spikes during startup by gradually increasing the output, which serves as a protective measure for the external FETs. Summary of Protection Features For technicians troubleshooting LCD/LED TV backlights