Hello,
this monitor has a backlight problem, it goes off after 10 seconds sometimes earlier. Transistors are ok. What i realized is that if i remove the dim signal the light stays on but is flickering.
The feedback voltage drops from 1.42 volts to 0.73 volts when the light goes off. if i put 1.4 volts on the feedback pins the light will stay on nothing is burning or smelling or anything but i want to fix it the right way. i measured all the resistors but they look ok, i tried with different lamps but is also the same. I have the schematic but i can't really figure it out, because also the time varies when the backlight goes of its not always the same.
this monitor has a backlight problem, it goes off after 10 seconds sometimes earlier. Transistors are ok. What i realized is that if i remove the dim signal the light stays on but is flickering.
The feedback voltage drops from 1.42 volts to 0.73 volts when the light goes off. if i put 1.4 volts on the feedback pins the light will stay on nothing is burning or smelling or anything but i want to fix it the right way. i measured all the resistors but they look ok, i tried with different lamps but is also the same. I have the schematic but i can't really figure it out, because also the time varies when the backlight goes of its not always the same.
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