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So my Coolpad note 5 got dropped in water. Picked it up immediately and it was working for few minutes before the screen flickered and display went out. Phone is still on the LED for charging and notification is working , phone is vibrating with notification, just the display is completely off. Please help me what to do next.
Billy Williams it is not the digitizer that needs to be replaced. If your LCD does not turn on after water damage it is possible that it is your display that has failed and it will be best to replace the complete display assembly. LCD and digitizer combined since those are fused together. The other real issue here is that it is a water damaged phone. Regardless on how long it was submerged it will possibly have damaged the circuitry or can cause corrosion failure later on. The very first thing you want to do is to no longer try to turn your phone on. The next thing to do is to clean it. Disassemble your phone using something like this video and others. You must remove all the EMI shields of the logic board. If you do not remove those you are not cleaning 3/4 of the board. Clean everything with +90% (no less than 90%) isopropyl alcohol. Follow this guide, and even so it was written for an Apple iPhone 3G all the points are still pertinent to your phone. Pay particular attention to the SMD components, check for charred missing or broken missing. You can then dry the board in an oven or equivalent at 220 deg F (not higher;-) for a few hours. Best way to clean it would of course be through an ultrasonic cleaner. Consider professional help with that When it is properly cleaned, replace the battery. All these steps are to avoid delayed failure caused by corrosion. Once all this is done, reassemble your phone and reevaluate. If you still have a totally blank screen after that, it is possible that it is A: a bad LCD backlight (replace the LCD) or B: a short on the circuitry on the logic board. Let us know what you find. Hope this helps, good luck. If you need to check the power circuitry use this flowchart to check things out
You need to replace your digitizer.
