Having problems with your Dell E173FP 17" LCD Monitor ?
Picture goes black at random intervals
\015 I have this monitor and the picture goes black at very random intervals. I know it's not the signal from the PC because if I press the monitor power button the monitor comes back to life. Sometimes for a few minutes, sometimes for a few hours. I have read another post here that says it's the C5707 transistors and/or bad caps which causes the backlight to go out. I wouldn't say it's the backlight going out because: 1.) I do not see a ghosted image of the screen2.) The power light goes completely out like the entire monitor is losing power, not just the backlight.3.) The monitor doesn't go black instantaneously, it's like a slow 1 second pixelated fade (blue pixels) like the main power/voltage was dropping.I am a electronic engineering technician by trade and am going to take it apart to fix it. Do the C5707 transistors provide power for the whole monitor or just the backlight? I would like to know which components supply power to the whole monitor as I'm guessing those are likely the problem.\015
There are 4 c5707/5706 in the inverter transformer driving circuits, the cause of the problem was due to poor solder connection in the bias circuits of the transistors. Make sure to check that after you install the new transistors otherwise you will blowthem up. Common problem with this model. When the circuit drwas too much power from the power supply, it will shut itself off to ptotect itself.
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