I have a Dell 2408WFPb that is giving me the issue depicted in the images below:
Sometimes the screen is completely blank when I power it on. I get only that thin, blue dotted line at the top of the screen (as depicted in the second image) when I use the input option button to cycle through the inputs.
The monitor functioned properly, a couple of times, when I unplugged the power cord and held the power button in for 10 seconds, released the power button and then reattached the power cord.
I love this monitor and would like to repair it but my soldering equipment and soldering skills stink!
Is it possible to tell which component (i.e., power supply, main PCB) is causing this issue instead of just throwing parts at it?
This happened after a power outage. What really ticks me off is the fact that the monitor was plugged into a fairly expensive UPS with sine wave output. The monitor was fine when the power went out and it was running on battery. The issue occurred when the power was restored. I don't know what the freakin UPS did to cause this.
Sometimes the screen is completely blank when I power it on. I get only that thin, blue dotted line at the top of the screen (as depicted in the second image) when I use the input option button to cycle through the inputs.
The monitor functioned properly, a couple of times, when I unplugged the power cord and held the power button in for 10 seconds, released the power button and then reattached the power cord.
I love this monitor and would like to repair it but my soldering equipment and soldering skills stink!
Is it possible to tell which component (i.e., power supply, main PCB) is causing this issue instead of just throwing parts at it?
This happened after a power outage. What really ticks me off is the fact that the monitor was plugged into a fairly expensive UPS with sine wave output. The monitor was fine when the power went out and it was running on battery. The issue occurred when the power was restored. I don't know what the freakin UPS did to cause this.
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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