Re: Backlight constantly On after repair

have replaced all 4 c5707s and resoldered the transformers, monitor is back to life. We'll see how long it lasts this time.

this time however none of the replaced c5707s had any shorts between the pins so i wasnt sure which one was actually broken. if there a good way to test?

Re: Backlight constantly On after repair

Haha speak of the devil, the monitor just died again today, and have ordered another kit, good thing they arent expensive. Live and learn I guess.

regarding re soldering. Just heat the solder up/apply a bit more to all the pins and that's it?

Re: Backlight constantly On after repair

Yea it was a through hole component. I pretty much just bent the leg and it happened to reach the next component directly. So the track was bypassed altogether. Monitor is not running so warm now either so looks to be a good success.

Re: Backlight constantly On after repair

ha, looks like i didnt take enough care when testing, It appears one of the fqu11p06 fets was shorted, replaced both and now monitor is all good. When taking out of the the fets one of the tracks got lifted. Had to ghetto wire it directly to the pad the trace it was connecting to. Hopefully nothing blows up in my face . This was the middle leg of the fu024n mosfet

Hi guys, My Benq Fp91g had the backlight problem. Ordered a repair kit from Ebay and replaced all 4 c5707 transistors and the 3A picofuse. One of the transistors was shorted on the pins so I guess that was the problem. Now it works but the backlight is always on even when I press the button to turn off the monitor and the LED indicator shows it is off. If leave the monitor alone and the PC goes to sleep, the same thing happens with the backlight being fully on when the LED indicator is orange. There appears to be no problems during normal usage ( only tested for about 30mins though) but the monitor...