Hi. I recently had a problem where my S4 was in the laundry. Luckily, I was able to get it out after 5 minutes with a hard case on it and it was still in my pocket. The phone's LED notification was working, along with the lights near the home button. However, the screen would stay black. I immediately took out the battery (which had the red notification saying it was water damaged), the SD card, and the sim card. I put everything in a bag of rice after drying it and I let it sit for about 24 hours.
At this point I realized that the phone must be dry, so I took it out. I dissembled the phone and used 91% isopropyl alcohol to clean the motherboard and all of the other parts with a toothbrush. There wasn't any noticeable oxidation (white powder) on any of the parts. Once that was done, I reassembled it and put in a new battery. Nothing. I decided to clean it once more a few hours later and nothing happened when I held the power button. I also tried charging it, and that did nothing.
Does anyone have any recommendations on what I should do? It would be appreciated. Thanks.
At this point I realized that the phone must be dry, so I took it out. I dissembled the phone and used 91% isopropyl alcohol to clean the motherboard and all of the other parts with a toothbrush. There wasn't any noticeable oxidation (white powder) on any of the parts. Once that was done, I reassembled it and put in a new battery. Nothing. I decided to clean it once more a few hours later and nothing happened when I held the power button. I also tried charging it, and that did nothing.
Does anyone have any recommendations on what I should do? It would be appreciated. Thanks.