Chosen Solution
Hi, I don’t know for sure how this happened but I can guess it cause of rainy day and the tablet was inside my bag . I try to fix it with White Rice for 4 days but still not fix it . I don’t try to set it directly on sunlight sun with the rice , would it change something ? Sometimes all the screen work and sometimes half of it get black-white lines . when I turn it in Recovery mode - the half of it okay but still there has smash words like something not okay there . The half of screen has Black-White lines and the other is good. I would like to hear any suggestion that can help me with this situation. Thanks.
First off rice does nothing. Remove the back cover and check around the motherboard for corrosion especially around connectors.
There are guides on iFixit that will show you how to remove the screen. Samsung Galaxy Tab S3 Display Replacement As someone else said, rice doesn’t really do anything besides make a huge mess. To clean corrosion that has built up on connectors use some isopropyl alcohol (at least 90%) and a toothbrush to clean any corrosion from the logic board. Use a hair dryer after brushing the logic board to get rid of any moisture then attempt to connect the screen again. If the problem still exists then there is likely either damage to the logic board or the screen.
To remove corrosion take a tooth brush and rub it carefully. If your tablet still does’t work then your LCD must be replaced. Before you purchase any parts (if you need to) send a picture of where the corrosion is.
I had this on my Galaxy Tab S3. Progressively got worse until I had nothing shown on screen at all. The fix for me was open the back, and clean the corrosion off the wide display cable terminals. VERY GENTLY scraped it off with a small flat head screw driver then rubbed with some windex. Put it back together and now it works perfectly Be very careful cleaning the terminals, the contacts are very thin and it would be very easy to scrape the copper off Before clean
After clean
