LCD issue after water damage repair

This is my story/issue, im kind of at a loss. So on the 6th my 4s got wet in the river while fishing. I shut it off right away and dried it out the best i could. On the 7th i put it in a bag of silica beads and let it sit. on the 9th i took it out and tried it out it worked fine for a few minutes then got a temp error and wouldnt stay off, eventually like 15 minutes the battery finished draining out. it has sat in the bag untill tonight the 11th. i took it apart and cleaned the logic board. i did a full dis-assembly because there was a water spot behind the LCD. I did pull the back of the LCD up gently from the bottom ( opposite side of the wires and looked for moisture there was none so i put it back down. i assembled the phone and plugged it in only to find out im worse then before. When i pushed the power button all i could see is blue/red lines on the lcd and the went away. there were not alot of them and they were faint. It seems as if it supposed to be displaying the phone is charging bar but instead i have some lines. Does it sound like its a lcd issue or could it be something else im at a loss here. thanks for the help in advance.