Question about Dell E151FPp 15" Flat Panel LCD Monitor

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Dell E151FPb 15" LCD with power LED blinking.

NO Display with power LED blinking. Opened the cover, not doing anything. Just plug-in the power cable, switched ON & it is okay. Cover it up & work fine but some after a few days the same symptom came back but some after a few weeks & even months.

Thank you & Best Regards,
Simon Tukian

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  • jessegv Sep 23, 2008

    I have the exact same problem on the same monitor model number.

  • Anonymous Oct 01, 2008

    Same exact problem. In my case the screen lights up just for an instant. Looks like it is actually trying to turn on but then it goes off immediately. The monitor resets itself if Iunplug the power cord or sometimes when I smack it on the side.

  • Anonymous Oct 15, 2008

    Every time I put my computer on hibernation for more than a few hours (say overnight) when I power it up in the morning the monitor turns on for a second then the power light begins to blink and the screen flashes faintly white. I can get it to work if I gently squeeze the edges, usually the left edge. It will turn on and will continue working until I shut down and turn it on the next day. Some people have been able to fix a similar problem by soldering the L781 solder joint, but that is not the issue in my monitor. Any help would be appreciated. Nothing appeared loose when I had it apart, but there is a strip of some kind along the top and edges. The one on the right (when you are looking at the front of the monitor) has pegs that it sits on. I was able to move this around without any trouble, and wondered if it was supposed to be attached to those pegs. If that is the case, how do I attach it? I am nervous about using super glue or something that close to the LCD screen.

  • jfrompa Oct 22, 2008

    I am having the same issue with this model #. I began running a spyware scan and wanted to go to sleep, so I turned the monitor off. When I awoke about 8 hours later, I turned the monitor on and the power indicator turned amber. The screen did not immediately display, so I jiggled the mouse and tapped the spacebar a couple of times. The monitor began "flashing" a faintly white screen and the power indicator was now green, but flashing at the same rate as the screen. It seemed as though the monitor was power cycling itself. I unplugged the monitor and plugged it back in (as I could not turn it off via the power button) and it kept doing the same thing. I depressed the power button on the tower and received the same results.

  • Linda Iles Amershek
    Linda Iles Amershek Oct 23, 2008

    I'm having pretty much the same problem. I got up the other morning and turned on the monitor, the screen flashed and went blank the the power lite started blinking green. The power button now won' turn it off. If I unplug the monitor from the wall and wait and replug it in, it is still blinking. Now this last time, I unplugged it from the back of the monitor and it was fine. I am also using a different power cord than before

  • Charles Odom Jan 03, 2009

    Yes I to have the same prob, its to the point that it just has white lines even if you have the pc off, there's a faulty soilder joint of cable, i'll crack mine open to find a solution.



    Charles

    msngr: MrChazz78 @ Y!

  • madgerks Apr 26, 2009

    check Q604 to make sure there is proper voltage there (approximately 12 volts) this FET sometimes is weak

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The problem may be a loose connection. When I turn on my monitor, the green light blinks and a flickering white screen appears for a brief second every time. There must be a loose connection on the power board which may be causing this. The easiest solution is to tap at the back of the monitor. This will reconnect the loose end and the monitor will work fine until it gets disconnected again. I will open my monitor soon to find the real problem. But it will take some time to find it.

Posted on Dec 26, 2008

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I had the same problem. Took the cover off and checked for loose components but didn't see any. Took the main board off and checked the soldering connections from the back (all looked good). None of the components seemed fried. Decided to remove the slopped-on white glue on the components in cases where I thought it could short those components together. Reassembled and it worked just fine with the self-test showing up.

Michael

Posted on Dec 09, 2010

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White screen at bootup


Dell Support > Inspiron1564 Notebook PC > Service Manual,

http://support.dell.com/support/edocs/systems/ins1564/en/sm/index.htm

http://www.insidemylaptop.com/replace-broken-screen-dell-inspiron-1564-laptop/

Let's start with two small primers first;

A) An LCD screen cannot produce light. It needs an additional light source. A Backlight is the additional light source.

A Backlight can be a CCFL, (Or two of them), or a series of LED's.
(Light Emitting Diode)
The Dell Inspiron 1564 Notebook PC can come with either a CCFL backlight, or LED backlighting.

http://www.laptopscreen.com/English/model/Dell/INSPIRON~1564/


A CCFL is a Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

[ Average thickness is 2mm. That is a little larger than 1/16th of an Inch.
Average length is almost as long, as the LCD screen is in height.
Basic example. Look at the last 9 photos,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/ ]

A screen Inverter is used to convert the electricity from the laptop, for the LCD screen, and Backlight.
For LED backlighting a screen Inverter may not be used.

B) For a Dell, video cable is Display Cable.
LCD screen = Display Panel
Switch Cover = Power Button Panel
(Cover that is a strip of plastic essentially, that is above the Keyboard, and below the LCD screen. Has Power On button)

Display Cable:
The display cable attaches to the motherboard, in an area under the Power Button Panel. (Above the F2 and F3 key, approximately)
It then routes under the left Hinge, and up into the Display Panel Assembly.

From there it attaches to the screen Inverter, if used, and to the back of the LCD screen.
A example of the cable,

http://www.ebay.com/itm/DELL-INSPIRON-1545-LCD-FLEX-CABLE-LED-R267J-NEW-/370491513861?pt=US_Laptop_Screens_LCD_Panels&hash=item564303dc05

The cable may become pinched in the left Hinge. This can cause pulling on the cable, and/or damage.
Pulling may cause loose connections of the cable. Loose at the motherboard side, or LCD screen side.

Doesn't take much of a loose connection to get issues like what you are seeing.
In fact it may be so minute (My-noot) that it won't be visually seen.
The ONLY way to be assured the connections are tight, is to PHYSICALLY check them. Try to plug them in tighter.

This means checking the display cable on the motherboard side, and LCD screen side.

http://support.dell.com/support/edocs/systems/ins1564/en/sm/powerpan.htm#wp1061007

The Power Button Panel contains the Power On button/switch.
It can be removed, and laid over so that the motherboard connection can be checked, with the Power On switch still attached. This way after physically checking the connection, the laptop can be turned on, and display checked.

[Lay the Display Panel Assembly back as far as you can. Suggest covering screen with soft cloth, or suitable device to protect screen.
Screen has to be handled as if it is good, until diagnoses shows differently.

If the Power Button Panel cannot be laid back far enough, to get out of your way, unplug the Power Button cable. Plug back in to check display.
ALL power removed BEFORE disassembly.
Replace Battery, and AC adapter (Charger) when going to test display, after checking connection ]

For the LCD screen (Display Panel) side of display cable connection,
remove ALL power, then,

http://www.insidemylaptop.com/replace-broken-screen-dell-inspiron-1564-laptop/

,disassemble down to Step 7. This way you can lean the screen out, and check the connection.
Display Panel connection physically checked reinstall power, turn on, check display.

IF there is obvious visual signs of damage to the sheath of the Display Cable, there may also be damage to the tiny wires inside.
(Stretched/Broken)

A continuity check with a multimeter is warranted.
If the Display Cable's sheath does Not show obvious signs of damage, it is still best to perform a continuity check, so you can Positively rule out the Display Cable as the problem.
Suggest go to a local 'Mom and Pop' computer store, and for a coupla' bucks have them check it.

Or replace it.

Display cable checks out 5by? (OK)
Go on.

Screen Inverter:
The next item to check is the screen Inverter, IF a screen Inverter is used.
90 PERCENT OF THE TIME the fault can be attributed to a bad screen Inverter.
One example of an Inspiron screen Inverter,

http://www.ebay.com/itm/New-Genuine-Dell-Inspiron-1545-Series-Lcd-Inverter-Board-15-6-H251M-0H251M-/300756244730?pt=US_Laptop_Screens_LCD_Panels&hash=item46067818fa

Yes. It's an Inspiron 1545 screen Inverter. Couldn't find a listing for an Inspiron 1564 screen Inverter. Means to me that most of the 1564's use LED backlighting, or everyone is switching to an LCD screen that uses LED backlighting.

Display Panel:
If the screen Inverter checks out, the problem is the Display Panel.
(LCD screen)
IF there is No screen Inverter used, the problem is the Display Panel.

I'm willing to bet you have a loose Display Cable connection, or damage to the Display Cable.

For additional questions please post in a Comment.

Regards,
joecoolvette

[ For the areas you are going in no ESD wrist strap is needed.
It IS however, always a good practice to wear one, and have it's alligator clip attached to a good ground source.

Electro Static Discharge.
Your body carries Static electricity. Static WILL fry out (Short Circuit), the delicate hardware components inside a computer. (Laptop or Desktop)
Doubtful that you will see it, or feel it. Poof! Your computer is fried.

An ESD wrist strap relieves your body of Static. You CANNOT just touch a metal frame of the laptop to relieve your body of Static, like you can a desktop computer.

Average cost is around $3 to $6. One example,

http://www.radioshack.com/product/index.jsp?productId=2103245

I connect to an unpainted surface, of the metal frame of an open, empty desktop computer case. I do not feel an anti-static mat is warranted.
You can also set a large metal serving tray (Unpainted), on the table you're working on, and connect to it.
Or use a large metal knickknack (Unpainted ]

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First, connect this monitor to another computer, if you still do not get a Windows image on the Samsung LCD monitor then it is faulty. The fault could be a faulty inverter board that supplies high voltage to the CCFL lamp or the fault could be a faulty CCFL lamp.
Parts for this monitor could be avaiable from LCD Parts, theie WEB site is :-
www.lcdparts.net

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