Hi, In this post we have shown below how you can do STR-H3475 Remove Protection. We have shown the complete datasheet of the IC and the pin details everything. You can easily remove the protection of this IC by just following the process that is told below.
STR-H3475 Protection Remove
The protection was removed by connecting the LED to 18 pins to the ground. You can also use this process, and I hope it will work for you.