Backlight Driver (PC Engine GT) Updated Mar 15, 2026 · 20 min read · 0 viewing Log in or register to read the full article. Previous 5V Circuit (PC Engine GT) The 9V from the battery comes in, through the F500 fuse, into the Q502 transistor (BJT PNP). N... Next LCD Circuit (PC Engine GT) The PC Engine GT has the high voltage (backlight tube) generation circuit, HSYNC/VSYNC and data...