Nokia Lumia-900 LCD Display Solution

iLink, mobile repairing for Nokia Lumia-900 LCD Display problem at phonetolls. Have your cell phone display did not working. It have a no light or no display issue. This problem is related to hardware mobile repairing and you can resolve it by our fresh ilink mobile repairing guide.
I have draw some lines on the faulted section at a motherboard components. These can help you to find and fix your problem. Here is the image diagram to better understand this issue. 

Image, diagram motherboard layout Nokia Lumia 900 LCD section.

Nokia Lumia-900 LCD Display Solution step one by ilink shahid.

The, diagram above number one. Will help you for the motherboard parts repairing. There is the resistance filter, resistance and display connector. You can clean this display connector for the carbon issue. You can direct resistance with jumper wire. You need to dry this section after cleaning with electronics cleaner.

Image, diagram Nokia Lumia-900 LCD Display strip connector Solution. 

Nokia Lumia-900 LCD Display Solution for display strip repairing.

Display problem troubleshooting guide by ilink shahid.

When, a display issue come to any mobile phone. Their is no light on display, display not working. In many cases, Mobile phone can send received calls but the dark display issue will accorded. User can see something into a torch or sun light. Some time mobile phone will be died after the display fault. In many cases the faulted LED back lights are the major cause of this issue. The broken display not comes into this category.

For, the broken display you need to replace it. But for the missing something on a motherboard. For example, LED not working. Display connectors are missing or carbonation. Light chip is faulted and their is no current for the display lights. Mobile phone repairing by PhoneTolls will help you. Let we start to manage repairing the display issue by steps. 

Nokia Lumia-900 LCD Display repairing.

First of all, You need to clean all connector on the display section. You can clean by needle pin and electronics cleaner. Dry after cleaning by CTC or petrol with hot air. Try to avoid and do not disturb the sensitive part of mobile phone. The camera, mic and LCD panel comes into a sensitive parts of every cell phone.

• Do not try to heat main chips as the first solution. See inside the water damaged mobile phone. If there is any missing or damaged part you can trace. 
• Try to repair it first then apply next step of mobile repairing. The next step to troubleshoot for this issue. Some tests are required for a display problem. 

Here are the important ways of troubleshooting.

Try, to test current on the display Lights pins. If the display links are broken or missing. You can make a direct jumper by a image diagram below. For the display connector repairing. You need to start first from the motherboard connector then display panel strip connector and last LED connector at the back side of panel. The jumper and LED lights are working fine but the LED current is missing. In this case, You need to fix this issue from the Lights controller section.

There, could be a separate section or build-on power chip. In separate section of LED lights controller. There could be lights current filter chip or transistor for a auto switching. The auto switch may help to refuse battery life. The display lights are the major things that can drain battery fast. So learn more for the display lights auto switching. Any way let we go to the point mobile repairing by steps.

Make sure! mobile phone software is working fine. You can test it by making a call to other cell phone number. If the call is attended the issue is only with a display section. The display section will be repair on by hardware troubleshooting. If you have a last and final plan to heat the power or CPU section.  You need a dead approval from its owner. Mobile phone will be permanently died.

This, issue will help for the water or quieted damaged display. But before going to last step. I recommend you to solve this issue from the display panel changing. Some time display panel is the major cause of this issue. I have shoot this issue many time on my lab by replacing a display panel. You can test this issue by connecting other LCD if available on a lab. The best way to manage repair any display issue is a simple way. Just test the mobile phone some different ways.

For example: If the display lights are not working. You can test it by torch light. There is a menu or display icon will be shown by external lights. You can test the faulted LED current by attached the external current from battery or power supply. If the LED lights are working fine at the external current. That mean the issue is traced and now you can shoot it from Lights controller section.

A little bit you can, replace the faulted LED lights. The back side at the top of LCD there are one or more LED you can see after disassemble the LCD. If there are three LED lights into a series. You can test the faulted LED with check meter or by directing any one. You can make a direct jumper from here to sim controller section. It will help you for the easy and perfect missing display lights. But for the human mistake if you have find any thing else here. Please help me to correction that by email or comments section.

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