Having problems with your Dell E173FP 17" LCD Flat Panel Monitor ?

Screen goes blank

\015 While using the computer my monitor randomly goes black, need to turn it off and back on (sometimes more than once) to get picture to re-appear. Power light is still green when the screen goes black. Tried replacing video card and tried monitor on another computer, no sign of the problem on other computer and problem still persists with new video card. Any insight to this issue would be greatly appreciated!\015\012LG L1710S Silver Monitor keeps going black on an irregular basis. Light stays green. Need to switch the monitor off then on to regain picture.\015

Answers :

Normal\015\012 0\015\012 \015\012 \015\012 false\015\012 false\015\012 false\015\012 \015\012 \015\012 \015\012 \015\012 \015\012 \015\012 \015\012 MicrosoftInternetExplorer4\015\012 \015\012\015\012 \015\012 \015\012\015\012\015\012\015\012\015\012\015\012 /* Style Definitions */\015\012 table.MsoNormalTable\015\012\011{mso-style-name:"Table Normal";\015\012\011mso-tstyle-rowband-size:0;\015\012\011mso-tstyle-colband-size:0;\015\012\011mso-style-noshow:yes;\015\012\011mso-style-parent:"";\015\012\011mso-padding-alt:0in 5.4pt 0in 5.4pt;\015\012\011mso-para-margin:0in;\015\012\011mso-para-margin-bottom:.0001pt;\015\012\011mso-pagination:widow-orphan;\015\012\011font-size:10.0pt;\015\012\011font-family:"Times New Roman";\015\012\011mso-ansi-language:#0400;\015\012\011mso-fareast-language:#0400;\015\012\011mso-bidi-language:#0400;}\015\012\015\012\015\012\015\012Cause of power going\015\012off: There is a bad 1000uF, 16V cap\015\012on the power supply board.
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\015\012\015\012Solution: Replace cap. Radio Shack sells a 1000uF, 35V\015\012cap for $2. This will work.
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\015\012\015\012Why did the cap go\015\012bad? The cap is too close to a heat\015\012sink and over heated.
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\015\012\015\012What does this cap\015\012do? This cap sends a signal to an IC\015\012which keeps the monitor 'on' after the power switch is pushed. When the cap is weak, AC ripple voltage is\015\012applied to the IC and it sends a signal to shut the monitor off.
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\015\012\015\012Opening the Monitor:\015\012These monitors are difficult to open.
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\015\012\015\012The two plastic pieces snap together and must be pried apart\015\012with a flat screw driver.
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\015\012\015\012After removing the stand, you need to insert a flat screw\015\012driver at the bottom of the screen where two slots are located. Then work the screw\015\012driver around until the two plastic pieces are separated.
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\015\012\015\012Remove the cover plate and unscrew the push button circuit\015\012board.
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\015\012\015\012Unplug the monitor cords from the driver board and remove\015\012the screen.
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\015\012\015\012Unscrew the mounting screws from the power supply board and\015\012remove.
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\015\012\015\012You will need to pinch the plastic support in the middle of\015\012the board to remove.
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\015\012\015\012Cap Replacement:
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\015\012\015\012Cap is located near a copper heat sink and the value will be\015\012on the side of the cap. It will be bulged up on the top. You will see burn\015\012marks on the board surrounding the cap. Unsolder the cap.
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\015\012\015\012Install the new cap and solder. Make sure you connect + of\015\012the cap to + marked on the board.
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\015\012\015\012Be careful not to solder across joints.
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\015\012\015\012Keep leads long so you can bend the cap as far away from the\015\012heat sink as possible.
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\015\012\015\012Reassemble monitor and turn on.
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\015\012\015\012This should solve the problem.
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I've had these problems also with a couple of dell monitors I've owned. Although it affects most CRT displays. To my understanding, this relates to the alignment of the 'electron gun' that projects the screen information. Sometimes, if you apply a short term vibration to it, the 'gun' will realign itself, if only for a short time until it becomes unaligned again. I have developed a simple method. I dub this technique: "The Fonzie Method." What you do is, smack the *$#! out of it a couple times from a downward direction and hope it comes back on. After that just give it to someone who can open it up and fix it. Never ever try that yourself because the capacitors within a CRT can store enough energy to shock you, potentially fatally. Always keep in mind, nothing lasts forever. Consider, it might be time to give it a decent burial.
Repair Help & Product Troubleshooting for Dell E173FP 17" LCD Flat Panel Monitor

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