"Why won't my Samsung Galaxy Tab 2 charge?"に関する回答I was having a similar problem. First my tab would get the red X when I plugged it in, then one day I accidentally drained the battery completely and it would not charge when I plugged it in. The screen would light up momentarily with the battery and the little star-like loading symbol in the middle of it, then it would begin to "fill" with the blue that usually indicates it's charging (when powered off), then the screen would immediately turn off and start the process all over again. I finally fixed the problem! 1. after unplugging the charger, I removed the back cover (carefully!) 2. I unhooked the battery connection to the motherboard (you can see what that looks like here Samsung Galaxy Tab Teardown Step 8, third picture -it's for an older device but the connection is nearly identical) 3. Then, I unhooked the connections for the touchscreen and the display (see step 11 on the teardown link above, it will outline what those connections look like) 4. I then re-connected the battery-to-motherboard...