Question about Dell E153FP 15" LCD Monitor

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Case open, looking for bad solder

There's nothing that obvious when looking for dry/cracked joints. and L781 looks good from here....Of course I'm not a regular at soldering, but this doesn't seem to be my problem. (mine went white after cofiguring a new PC, now it turns white on all PCs..) Maybe it was directly related to the new video card...

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  • ITlady Mar 11, 2008

    Monitor Model is actually E151FPb....

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I took the monitor to an experienced technician in the medical field (repairs bio-medical equipment of all kinds) He picked out a few "blobs" of solder as well as went over the L781 inductor someone out here mentioned. It now WORKS PERFECTLY, no more white screen and I immediately got my self test display when I turned it on. THANK YOU fixya and all those who posted. I just saved $200 on a new display.

Posted on Mar 08, 2008

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This is how to check what's wrong with your LCD monitors. Firstly, power on both CPU and monitor. After it went white, you have to check that if you can see the image on the screen or not by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons or any image, there will be a minor problem. Like me, I can see window image using flashlight and check lamps inside. Some of them were broken and it is easily replaced. If you cannot see anything on the screen, there'll be some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or burn spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so.

Posted on Mar 08, 2008

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No power my LCD TV monitor 900t


Well, that looks like you have what we call a dry joint on the power supply connector of your monitor. With experience , i have discovered this to be a normal problem. Get a compute technician to open up the monitor for you and then take a closer look at the circuit board where the power supply is connected. Check for any dry joints (this means that there is a component on the circuit board that is directly related to power supply, and it is not properly attached to the board (soldered). Notice all the dry joints and use a soldering gun to put them back together and try to power the monitor. Check also for bulged or leaking capacitors. Replace them with the same type

Feb 20, 2012 | Computer Monitors

Tip

Common Electronics problems (1)


Sometimes our electronics appliances like TV monitor, radio or any other stuff may have a very simple problem. If we are not aware of this then we go in circles looking for the problem.<br />Technicians sometimes refer to this as intermittent problem. Sometimes the system will work and sometimes it will not. A tap/knock may get it working or will stop it from working.<br />Dry-solder joint is one of the causes.<br />If you are a novice and have no idea about electronics and how to work with soldering irons and electricity; please get assistance from a professional.<br />1. Switch off power.<br />2. Open the system up.<br />3. Discharge components which might hold charge to avoid electric shock.<br />4. Look at the bottom of the printed circuit board (track side of the PCB). You might need a hand lens for a closer look.<br />5. Look for cracks in the soldered components. Sometimes shaking components easily helps in identifying these cracks.<br />6. Once you get to know this, get your soldering iron, remove the old solder and re-solder the component.<br />7. You might be agitated to switch on and check your system at this point in time. Don't!!<br />8. Try and look for all the dry solder joints.<br />9. Fix as much dry solder joints as you can find.<br />10. Clean your board. Use isopropyl or general purpose thinner.<br />11. Double check the track side. There should not be any shorts that you may accidently done while soldering.<br />12. Once you are sure all is safe, assemble the system.<br />13. Connect a <span>series lamp</span> to the system and switch on to check.<br />14. If the problem stops; good for you. If it persists then continue looking for and treating dry solder joints.<br /><br />I will share more on series lamps in my next tip.<br /><br />Enjoy<br />Rjn<br /><br />

on Sep 19, 2011 | MPC Computers MPC F1760I 17" FLAT PANEL...

1 Answer

I have a similar problem to one posted a few months ago - flashing LED on the power button, except the monitor does come on after a couple of minutes and the LED stops flashing. bdmrtn said to the other...


Look real close at the solder joints on the inverter transformer pins, and the transitors. What usually happen is that the cold solder joints will mess up the bias on the transistors or causes arcing and that will take out the transistors, you need good magnifier glass to see, you will see ring/cracking around the component's leads.
http://s807.photobucket.com/albums/yy352/budm/Poor%20solder%20joints/
It will get to the point that the transistors 2sc5707/5706, and also still should look for bad caps.
Replacement board: http://www.lcdrepair.us
http://s807.photobucket.com/albums/yy352/budm/Dell%20E173FPb/

Sep 17, 2010 | Dell E173FP 17" LCD Monitor

1 Answer

Gemstar 15" monitor/GM 171-B powers up but nothing on screen


You may have either the DC filter caps problem or the back light inverter board has failed, worst case will be bad lamps assembly. So check for 12vdc on the inverter board, bad caps with leaking/bulging top, bad solder joints.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague

Jun 29, 2010 | MPC Computers MPC F1760I 17" FLAT PANEL...

1 Answer

HP vs19e monitor now dead. It flashed weakly, then quit. The push-button power switch will not turn on the indicator light. I have tried a different power cord, but still nothing. How does one open the...


There are four tabs at the bottom edge of the case tha needed to be release to open up the case.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed HP monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Jun 13, 2010 | HP Pavilion F1903 19" Flat Panel LCD...

2 Answers

The screen flashes on my Dell 1905FP Monitor, Is there a fix?


Hello,

This is a common indication of bad filter capacitors on the power supply board. Below is a picture of the power supply board with the problem capacitors circled in yellow. The repair is easy, you just need to replace those capacitors and the unit should be as good as new. Below the picture is also a link to a full repair guide showing how to dis-assemble the monitor and what parts need to be replaced. the repair guide has a full parts list for the job.


9_24_2012_10_46_26_pm.jpg

The repair guide can be found here:http://www.ccl-la.com/blog/index.php/repairing-a-dell-1905fp-1907fp-lcd-monitor/

Mar 26, 2010 | Dell UltraSharp 1905FP 19" LCD Monitor

1 Answer

The power supply light is green but when i push the power button on the front on monitor nothing happens! Do i need to crack open the case and look for a broken solder connectionor could it be something...


If you can open and removed the power supply/inverter board you can check the caps for obvious damage. *(leakage or swelling)

You can pull the offending cap or just do what I did and replace ALL the caps on that part of the power circuit. It isn't expensive and the board is big enough to handle soldering without a lot of hassles.

I did this for an old Dell monitor this past week and it is up and running!
Nice and bright too.

Good luck!

Nov 22, 2009 | ViewSonic VG150 15" LCD Monitor

1 Answer

The screen is flickering continuously after several hours use.when i inserted something to lift it up the trouble is gone.i suspected that a loose soldered joints because of heat of several hours of...


When you open up the monitor, there will be a main board on the bottom. Look at the solder joints and see if you can spot any that have hairline cracks in them. You may have to look at the different solder joints with a magnifying glass to spot them cause they might be hard to see.

When you find them, take the solder off by placing your solder wick on the solder joint and then put your soldering iron on top so it heats up the solder and it melts into the solder wick. After you do this then put fresh solder on the solder joint.

Do this with all solder points that you find cracks in them.

This should take care of the problem.

Ben


May 18, 2009 | MPC Computers AOC 7F 17" CRT Monitor

2 Answers

DELL LCD monitor E151FPb turn white


If the screen is all white light then you can have a number of problems.
One could be a bad video board, the next could be a simple loose wire from the video board to the back of the lcd screen OR a simple blown fuse on the back of the actual lcd screen can cause the same thing.
Snaps are all sround these things and can be really stubborn at times. Best to start the bottom first then work up each side to the top.
Something flat, thin and with a decent sharp edge on it will help. A pocket knife held parallel to the joint between the front and rear plastic works, you can also sharpen the edge of an old credit card with a file (nail file works) This isn't as strong as a blade , but safer if you slip !!
Fran

Oct 10, 2008 | Gateway FPD1975W 19" LCD Monitor

2 Answers

Lcd monitor goes white


The E151FPb's seem to have a problem of this sort. After doing some research online I've found that the most common problem is a few dry solder joints on the large circuit board inside the monitor. There was also some talk of a connector suffering from heat creep that sound be connected better on the inside, but usually that would make the screen turn black if it were to become disconnected. The monitor can be opened by unscrewing all the screws on the back, there should be 6 screws you need to pull out before being able to open the case. After those, insert a thin, but strong piece of metal into the side and sort of twist/slide it along the side and it should pop open some clips and just work your way around the perimeter. After that it's just some simple and obvious screws to get to the circuit boards.

Apr 11, 2007 | Dell E153FP 15" LCD Monitor

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