17ips72 Schematic [upd] < RECOMMENDED | 2026 >
Often caused by a failure in the standby PWM section.
: Frequently, shorted secondary diodes (like the STPS series) prevent the board from starting. Backlight Issues (Sound but No Picture) : 17ips72 schematic
Look for bulging electrolytic capacitors. Even if they look fine, they can lose capacitance and cause ripple voltage that confuses the mainboard. 3. Sound but No Picture (Backlight Failure) LED Driver Circuit: Often caused by a failure in the standby PWM section
