Hey All,
Need expert help. I brought out my old HP 2509M monitor to the light from my closet and decided to fix it. After resoldering a couple of mosfets and diode, the power button became functional. Upon switching on I immediately noticed that the backlight didn't turn on, so the screen was black. I hooked up the monitor to my PC and put a flashlight to the screen. I could see my duplicate desktop which was very dim. Now from what I understood, having gotten to this point this still could be an inverter or backlight issue? Right? Correct me if I'm wrong here. I proceeded to take apart the monitor and got to the backlights. One pair was charred and crispy, the other seemed to be okay. I have no idea what a dead backlight looks like physically. No char or burn marks on this pair unlike the other. I then reassembled the monitor without the backlights and hooked it back up to the PC. I shone light and noticed I can still see my desktop. Does this eliminate a faulty inverter as a possible culprit? Or having removed blacklights still can mean an inverter is bad? I don't have any other inverters to check the backlights that "seemed" to be okay. I have a feeling if it worked, then maybe half of my monitor would have lit up? I also don't have any other backlights to check the current inverter.
My specialty is unfortunately outside of this realm. I'm hoping someone can possibly give me some insight on my issue. Thank you in advance for any pointers.
Additional info: 2 years ago this monitor just stopped working and wouldn't turn on (as in, power button didn't do anything). I have since then stowed it away. Not sure what a time frame of 2 years has done to it sitting in a box.
Need expert help. I brought out my old HP 2509M monitor to the light from my closet and decided to fix it. After resoldering a couple of mosfets and diode, the power button became functional. Upon switching on I immediately noticed that the backlight didn't turn on, so the screen was black. I hooked up the monitor to my PC and put a flashlight to the screen. I could see my duplicate desktop which was very dim. Now from what I understood, having gotten to this point this still could be an inverter or backlight issue? Right? Correct me if I'm wrong here. I proceeded to take apart the monitor and got to the backlights. One pair was charred and crispy, the other seemed to be okay. I have no idea what a dead backlight looks like physically. No char or burn marks on this pair unlike the other. I then reassembled the monitor without the backlights and hooked it back up to the PC. I shone light and noticed I can still see my desktop. Does this eliminate a faulty inverter as a possible culprit? Or having removed blacklights still can mean an inverter is bad? I don't have any other inverters to check the backlights that "seemed" to be okay. I have a feeling if it worked, then maybe half of my monitor would have lit up? I also don't have any other backlights to check the current inverter.
My specialty is unfortunately outside of this realm. I'm hoping someone can possibly give me some insight on my issue. Thank you in advance for any pointers.
Additional info: 2 years ago this monitor just stopped working and wouldn't turn on (as in, power button didn't do anything). I have since then stowed it away. Not sure what a time frame of 2 years has done to it sitting in a box.