Hi, I have a BenQ monitor and the backlight transistors just blew a few days after warranty expired. I have a little soldering experience but have no idea where to get these parts or the specifications for them. I am in Australia. Can you please help. I'm sure I can repair it if I can get hold of the parts.
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Since Dell monitors are made by BenQ, please look at Dell photo albums. Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also. http://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net
You need to open it up and inspect the PCB for bad solder connection or over heated components. BenQ made monitors for Dell, so look at some pictures of failed Dell monitors here to get some ideas what could have gone wrong with your monitors, post back what you see so we can guide you further: http://s807.photobucket.com/home/budm/allalbums
Well... it's seems your backlight inverter are busted. Need to replaced or repaired. To repaired, check for faulty capacitors on the inverter. ( For example, like a buldged on top of each caps.) Not sure...just replaced all the caps! Good lucks, have a nice day!
There are 4 pieces 2 each around yellow invertor transformers.
Check visually for darkened back of the transistor.For reliable testing you need to desolder and test with an ohmmeter.Also check the FET Fu9024 or D10Pf for similiar problems.
What is your actual symptom?
With AC adapter it's to your left, a rectangle piece. Without, it's under you power supply w/ built-in inverter... the capacitors look like a tiny battery on the side it have voltages size ( example like 1000uf 16v ) Good lucks, have a nice day!
ive solved this by taking out my vga cable and plug in my dvi cable and ive done some settings on my ati control center i have x1300 512 mb all you need is change your settings that this lcd dont support plus this monitor is huge!!!!!!!!! thank you for your support lol