Screen Backlight Inverter

Screen Backlight Inverter

The screen of my laptop is very dim. How do I know if the backlight or inverter?

I an HP Pavilion ZT1260. One day, the screen becomes very dark and I can not see. All images are there, and if you look at the right angle, You can use the laptop. If I connect to an external monitor, I use the laptop with external monitor without problem. Research depth on the web tells me it is very likely a bad inverter or bad lighting, and most likely the former. Who can tell me a means test and be sure of this? April 10: Children. Until now, some answers really winning. I wonder if these guys even not read the question?

You should consult the DMM output of the inverter. So, you must remove the frame around the panel. I would say that is not possible at least 4 good reasons to show weakness. Lamp, inverter, cables, or something wrong with the M / b. Lamp itself is supposed to go to 20 000 hours, so I would say not more than 20% chance of error of the lamp. I want to start with the investor and cable investors - who are more likely to be defective and not as expensive as the lamp or m / b.

FREDFET boosts energy efficiency of large-screen LCD TVs.
Based on Power MOS8(TM) technology, APT15F50KF FREDFET integrates power transistor tailored for large-screen LCD TV designs with high-voltage backlight inverters and CCFL controllers that provide PureBLACK(TM) CCFL image quality. With external circuitry, controllers can drive FREDFET in push-pull, half-bridge, or full-bridge CCFL inverter configurations. Available in TO-220 and TO220 Full-Pack ...