Question about IBM ThinkVision L170 17" LCD Monitor

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Ibm so if i can see a image with a flashlight how do i replace the lamps and how do i find them

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I used to repair monitor from Dell. There are 4 screws for rear panel and no screw for front frame. If there is no visible screw, you have to look for "capped" screw holes (little covers that fit flush with the case to hide the screws). If you don't see these neither, this must be a tension fit case. So, face the screen up and look for "rectangular hole" on the side edge (usually at the bottom edge of the screen). You'll need a very thin flat screw driver and wedge it into that narrow rectangular hole. You can use any prybar if you don't have screw driver. It is not too deep. You may stab something important inside and pry it. Once it starts to spread, start sliding it along the seem and you should feel the tension tabs start "popping" open. Continue to work your way around until it's off. The lamps should be located horizontally along the screen edge top and bottom. you might not see the whole lamps after opening the screen's back cover but you can pull it out from the lamp case. It has 2 electric wires connected to the end of the lamps.

Posted on Aug 13, 2008

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SOURCE: Where to get LCD Lamp?

Your problem may not be a lamp issue at all..it might be a power board problem.

Posted on Jun 09, 2008

  • 6771 Answers

SOURCE: I have an image with

The inverter module is bad or the back light behind the LCD screen has stopped working, I would suggest an estimate if you decide to have it repaired.

Posted on Jan 22, 2011

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I have an image with the flashlight, but no backlighting on my IBM 6734 lcd monitor


The inverter module is bad or the back light behind the LCD screen has stopped working, I would suggest an estimate if you decide to have it repaired.

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1 Answer

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I would suspect either the power suuply or inverter circuits, look for bad caps first which is common problem, see example of failed monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums
If you want replacement lamp, you can look here, it also gives you info on how to measure the lamps dimensions: http://www.lcdparts.net/

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First place to chaeck will be power supply, the problem can also be caused by bad inverter circuits, bad lamps, see example of failed monitors due to bad caps, lamps, http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further.

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Sounds like your LCD panel lamps are shutting down, this could be either due bad tubes, or more likely lamp driver power supply is faulty.

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Your problem may not be a lamp issue at all..it might be a power board problem.

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Hi this is the way how to examine what's wrong with your LCD monitors. After you turned it on and the screen blacked out, 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. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. If you cannot see anything on the screen, there'll be some problems with inverter board. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,

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The following steps are how to examine what's wrong with your LCD monitors. After you turned it on and the screen went black, 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. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. 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. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,
Tan

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2 Answers

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Hi you can inspect that what's wrong with your monitors. After you turned it on and the screen went black, 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. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. 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. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,

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2 Answers

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Hi,

The problem is known. You have to replace 2 capacitors on control board. C604 and C507 are 2 10uf capacitors that produce this problem.
My monitor working fine since i had replaced them. I hope i could help you.

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the spring tention of the switch is bad so u need to replaced...

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