We have experienced the same problem you are having. we found the problem to be the polarizer we were using 4in1 that had the polarizer laminated already to the screen. Polarizer bubbles are nearly impossible to remove. the other issue could be that if you are laminating the polarizer on the screen there could be bubbles underneath before you even put the glass and OCA on. our solution was to get the 3 in1 and hope the polarizer is good when taking off the glass, if the polarizer ripped then we would have to apply a new polarizer to the lcd making sure not to get any bubbles on this step then we would put the lcd into the mould and put the glass on that had the OCA pre installed.
Considering your name is rfurbishman I'm assuming you are wanting to do screen refurb on many different screens and not just one. You received a 2in1 glass which is the glass and frame what you need is a 3in1 which is glass, frame and OCA then there is a 4 in1 which is glass,frame,OCA and polarizer do not get this one because the polarizer bubbles are very unforgiving. Mobilesentrix has good 3in1
We have had phones and tablets come in with the same type of issues. We have a new antenna coming in for one to see if that helps at all. I will keep you updated on the outcome of that. But right now it is looking like we are at the mercy of apple until they release a new update to fix the issue. UPDATE: the device that we had come in we replaced the two lower antenna's being the wifi antenna and the Bluetooth antenna and it worked perfectly no issues. This may or may not be the case for every iPad that you are experiencing this problem with.
This is Usually caused by bad capacitors, open the TV up and check the power board to see if there are some visually bad capacitors. if nothing looks off you could test the capacitors with a multimeter. You can replace the bad ones or you can replace the whole board. most tv’s have three boards there will be a TCON, mainboard and a power supply. sometimes the mainboard and power supply are together.
I would follow apples guide it could be a PRAM reset or NVRAM reset https://support.apple.com/en-us/HT204267 It sounds like something is causing a short so you can try to replace the charging port itself before doing that and spending the money try apples guide then if that doesn’t work backup and do a factory reset.
are you able to hear music/ sound when watching videos? if you aren’t able to then there could be a problem with your speaker and that will have to be replaced. if it does work then there could be something going on in your settings if you go to settings then sound you can find the setting there. If that still doesn’t fix the issue I would backup your phone then do a factory reset.
Usually this is caused when the screen doesn’t sit fully down. when you run into this problem it could either be the adhesive used (adhesive that comes on/with screens usually isn’t very good to use) or there could be tiny shards of glass if the frame wasn’t cleaned properly or the old adhesive could still be on the frame giving an extra layer so the screen doesn’t sit straight to the frame.
When getting low amperage like that it usually means there is a bad battery but considering that you changed that and it is water damaged that diagnosis doesn’t apply. what i would do is pull the logic board from the frame and if you have access to an ultrasonic cleaner then pop it in there with either Branson EC fluid or alcohol. If you don’t have access to an ultrasonic cleaner then a tooth brush and rubbing alcohol will do. First soak it in a bowl of alcohol for 5 or so minutes then give a good scrub with a toothbrush let it completely dry and try a new battery, new port (if you have access to one), and a new screen this will eliminate other variables if you try all at once. if it does turn on and work then you can go backwards to find the issue.
The drive itself is synced to the motherboard. Personally I would try to replace the drive from the bad motherboard and put it into the good motherboard ps4 slim because if it in fact works it will be the easiest option. If this doesn’t work then you will have to swap the internals of the ps4 slim drive make sure you mark them so you don’t get confused. below is a greta teardown. https://www.sosav.com/guides/game-consoles/sony/sony-home/ps4-slim/optical-drive/
It seems like you have some sort of inverted colors on which usually if this is on it changes the color of everything on the screen and not just images. what I would try is to click the apple on the top left corner then click system preferences and then after that click accessibility then click display you want to make sure the 6 top boxes aren’t checked. if this doesn’t work you could try the color settings under display. If this still doesn’t work then I would head into an apple store and see what they have to say. If you don’t want to do that option you could back up your computer and do a factory reset. if it continues to have issues then it could be hardware related.