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  1. Repairing LCD monitor Dell 17", Repairing LCD monitor Dell 17": étape 1, image 1 de 1
    • 1. remove plinth from monitor by pressing the button on the back of the screen

  2. Repairing LCD monitor Dell 17", Remove screen surround: étape 2, image 1 de 2 Repairing LCD monitor Dell 17", Remove screen surround: étape 2, image 2 de 2
    • Best to do this with the screen facing down so you don't rip out the ribbon cable that attaches to the buttons on the front of the screen, start in the middle of the bezel to get purchase then slip a screwdriver underneath to gently prize up the bezel working along until its released, the edges are stubborn but do release with patience

    Do not remove the front bezel from the lcd screen you will rip out the ribbon cable from the front control buttons

    Derek Brabrook - Réponse

    ভাই আসসালামুলাইকুম ভাই আমার দুইটা dell led মনিটর আছে ১ টা হইছে ১৯ ইনচি আরেকটা হইছে ১৭ ইনচি দুইটার বেক কভার ভেঙে গেছে এখন এই দুইটার বেক কভার লাগাইতে কত টাকা লাগবে একটু জানাবেন আমার মোবাইল নামবার ০১৯৩৩২২৯৪৩৫

    md jasim - Réponse

    Can't help you on that I'm afraid my translator didn't do a very good job

    Derek Brabrook - Réponse

  3. Repairing LCD monitor Dell 17", remove back of monitor: étape 3, image 1 de 2 Repairing LCD monitor Dell 17", remove back of monitor: étape 3, image 2 de 2
    • remove back of monitor and remove the shiny steel RF shields one screw each then then simply slide off

  4. Repairing LCD monitor Dell 17", Remove both ribbon cables: étape 4, image 1 de 3 Repairing LCD monitor Dell 17", Remove both ribbon cables: étape 4, image 2 de 3 Repairing LCD monitor Dell 17", Remove both ribbon cables: étape 4, image 3 de 3
    • The small ribbon cable is easy to remove gently pull (see picture), the larger ribbon cable can be stubborn I tend to use two screwdrivers one to push in the release catch and the other flat bladed one to gently wiggle it out, same procedure for the other side, if you get image corruption after the repair this is the cable that is the culprit

  5. Repairing LCD monitor Dell 17", Remove HT cables: étape 5, image 1 de 1
    • There are 4 of them

  6. Repairing LCD monitor Dell 17", remove back panel off the LCD screen: étape 6, image 1 de 1
    • 4 screws one in each corner attaches the electronics cradle to the back of the LCD screen

  7. Repairing LCD monitor Dell 17", Remove circuit boards from each other: étape 7, image 1 de 3 Repairing LCD monitor Dell 17", Remove circuit boards from each other: étape 7, image 2 de 3 Repairing LCD monitor Dell 17", Remove circuit boards from each other: étape 7, image 3 de 3
    • remove the 4 screws one is bigger than the rest then undo the screws that hold the power cable socket in place, once the power socket screws and the top board screws are removed put your thumb over the power socket and pop the board out sideways you don't need a great deal of force to remove the PSU board just loosen gently

  8. Repairing LCD monitor Dell 17", slide the two boards apart: étape 8, image 1 de 2 Repairing LCD monitor Dell 17", slide the two boards apart: étape 8, image 2 de 2
    • take note of the berg strip and make sure you don't damage the pins when removing flip the board over and you're ready to remove the capacitors, when re-assembling make sure the berg strip lines up correctly before pushing the boards together

    C204 and C203 are the two capacitors that usually go (guide author D.Brabrook)

    Derek Brabrook - Réponse

  9. Repairing LCD monitor Dell 17", This is what a successfully repaired monitor should look like: étape 9, image 1 de 1
    • After re-inserting the ribbon cables a small one for the buttons at the front of the bezel and the main one that carries the data to the display, once you have reconnected successfully you should get a clean bouncing screen saver moving around the screen, if there are any screen anomalies it is always the thicker data cable that needs reseating

  10. Repairing LCD monitor Dell 17", Put the back cover back on: étape 10, image 1 de 3 Repairing LCD monitor Dell 17", Put the back cover back on: étape 10, image 2 de 3 Repairing LCD monitor Dell 17", Put the back cover back on: étape 10, image 3 de 3
    • it's best to test the monitor before you put the back cover on the screen, as invariably the larger of the two ribbon cables has not seated correctly, once you're happy your screen works put everything back together and you're good to go

Conclusion

Reassemble in reverse order taking time to re-fit the ribbon connector which can be a bit fiddly but you can test it

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Derek Brabrook

Membre depuis le 16/02/2014

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1 tutoriel rédigé

9 commentaires

Thanks for this post! I am having an issue with the VGA input on this monitor. The monitor turns on no problem, but doesn’t get a signal from a VGA input. I have confirmed that this is an issue with the monitor and not the cable. Will this resolve the issue?

Gary Ogilvie - Réponse

This fix is specifically for the issue where the monitor switches on and has a green light on the front but there is a black display OR it can manifest as the display briefly coming on but then switching off and staying off after about 2 or 3 seconds

if it’s your vga logic board then see Step 7 that logic board is the one to the bottom left of the picture with the ribbon cable attached that is the board that deals with the signal coming from the computer VGA output, if you remove that board and heat an oven up to around 180C and put it in for no longer than 8 minutes with the components face up enough to reflow the solder then remove from the oven (carefully because any sudden movements could dislodge the components as the solder will be liquid)

that may fix the problem, no guarantees mind that’s a last ditch thing to try if all else has failed…

hope that helps :)

let me know how you get on :)

Derek

Derek Brabrook - Réponse

Fantastic really appreciate the reply! Will have a look at what you have said and keep you posted :)

Gary Ogilvie -

I honestly don't know where the other editors of this guide sprang from, none of them contributed to it, most of them removed things that you'd need like two 470uf capacitors and they'd remove one capacitor, this circuit board always blows both capacitors, or very minor picky changes….

I wrote it as I intended it to be read….

So if you don't know what you're talking about don't edit my guide when I know its 100% correct

Thank you!!!

If you keep doing it, I'll just delete the whole thing

Derek Brabrook - Réponse

Hi @draconis - Hope you are safe and well!

I’ve have a Dell 2408WFP, which has worked perfectly until I had to move it to another location.

It’s never been unplugged from power and is on a UPS.

After I plugged it back in, the power button LED lit up, immediately went out, and the power button did nothing from that point.

If I cycle the power connection a few times, I can get the backlight to come on with no power LED, but the power button still does nothing.

If I do this a few more times, the power button LED will come on, stay on, and the screen comes on and displays video.

Once it’s in this state, I can then turn it off/on with the power button normally.

However, if I unplug power again, it’s back to the failed state.

While old, it’s still a great monitor and I would like to try and fix it.

I called a few shops, and they all basically said it’s not worth repairing.

If it’s just replacing a couple of caps on the power supply board, I am fully capable of doing that, and it would be worth it to me.

Thoughts? Thank you!

Charles LaBarbara - Réponse

The guide is specific to the model described but the issue sounds very similar, it won't hurt taking it apart to look at the PSU board, if you see capacitors that have domed replace them, when the caps are on the way out they can cause intermittent operation before they fail completely. So give it a whirl nothing to lose except a bit of time.

I've repaired hundreds of these monitors and the are still going strong after 3 or 4 years after repair

I'm not familiar with your model but it's worth a try a lot of dell kit uses the same hardware underneath

Derek Brabrook -

Understood, and appreciate the reply. Will have a look at some point and report back. Thanks again!

Charles LaBarbara - Réponse

السلام عليكم ورحمة الله

Data cable (data flat) inside the screen is teeth and appears as a welded sector

It appears that the teeth that were fused to it were broken

What is the solution?

uni abdo - Réponse

Are you sure it is the exact same model? I've not repaired one which had a soldered connection.

But if it is soldered then you'd need to replace the entire cable which probably wouldn't be economically viable considering the age of these monitors

Derek Brabrook -

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