Water Damage, turns on but blackscreen - which part to access?

Question

Nexus 5

다섯 번째 Google Nexus 휴대폰. 2013년 10월 31일에 공식 발표되었으며 4.95” 1080p 스크린, 2.26GHz Snapdragon 프로세서 및 LTE 지원을 자랑합니다. Android 4.4.2, KITKAT. 제조사는 LG.

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Hannah @hannah91901

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게시일: 2015년 11월 1일

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Water Damage, turns on but blackscreen - which part to access?

Good afternoon

I dropped a Nexus 5 down the toilet - screen started going mad and eventually went black. Managed to hook up to a PC and removed photographs. Left to dry for a number of days and charged phone again. Phone appear to be on as it goes from black to lit black and I had notification sounds and can use volume buttons and volume up/down sounds still occur - so phone definitely still working - but screen just a lit black.

Opened up the back at the big water damage sticker is red. Haven't gone further into phone and assume the connector to screen is damaged.

Can you advise if I can fix or where I should investigate now?

Many thanks

Hannah

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oldturkey03 @oldturkey03 평판: 781.3k 1.1k 892 2.3k · Answer 1 · 2015-11-01T08:33:21-07:00

Hannah, for now your phone is still working. If you do not clean it properly it will be dying a slow death caused by corrosion. For now you want to stop continuing to try to charge, sync or otherwise use your phone. This potentially can make a bad situation worse. The very first step I would take is to disassemble your phone. Use these guides to disassemble your phone. Take a careful and close look at all components and connectors. Truly assess the damage. Look for major corrosion, evaluate the pins in the connectors etc,. Take a look at all connectors as well as cable ends. After that I would suggest that you remove all the EMI shields. Once you got any gross contamination cleaned, use 90%+ isopropyl alcohol and clean your parts some more. For a proper cleaning, use this guide. It was written for a Apple iPhone 3G but it is still pertinent to your phone as well. I can not stress the importance of a good cleaning enough, so do it over and over while replacing the alcohol after each cleaning. Do not use compressed air for the cleaning since that can drive liquid as well as corrosion particles into areas that will cause trouble later on. Do not use drinking water, if you need to use water, use sterile water. Also, you do not need to leave it to dry for a day. Isopropyl alcohol in the higher concentration will evaporate quickly and dissipate the water. The importance here is the cleaning. The best would of course be if you can get it professionally cleaned with an ultrasonic cleaner. Once properly cleaned replace the battery. This is a must and not an option. It will fail if you do not take care of it now. Once you got all this done, reassemble your phone and re-evaluate. If after all this your display still does not work, it is possible that replacing it will resolve that problem, it is also possible that your phone is having problems with the circuitry on the circuit board. Anything will only be a guess for now until you did the previous steps. Keep in mind that water damage is the hardest to troubleshoot and to repair.