max damage

My friend is telling me her device is the Samsung Galaxy J7 SM-700T. When looking for parts I see TONS of different...

Sound like maybe you damaged the display its self and/or display cable on disassembly? If you can try an external display, that might be a good test. The fact that the machine chimes, means the digital portion of it seems happy (passed power on test).

Another potential problem is if you are not careful when reassembling the iPhone, the top stack of components on the screen can be to out of position. This can cause the phone to close as easily as it should and leave extra pressure on the display. Sounds like probably just an incomplete seating of as connecter though.

What the heck is a “screw slot”. Is the screw itself damaged? You can replace this with another fastener of the same thread and length. I have a little bucket of screws that were scavenged from old hard drives and dead computers. I have used other screws in this case, again, of the SAME THREAD and LENGTH.

Try buying the actual OEM part. I would get from a local Appliance parts dealer. In Seattle I use Apex Appliance on Aurora., Inspect it at the store and see if it looks materially different? If the wire you say is melting is larger, that could be your issue. I also wonder if the microwave itself could be cooking the switch? It’s an odd theory, but a switch doesn’t usually have high voltage, its usually just a gate for the rest of the circuit; If SOMEHOW the microwave was leaking radiation onto the switch, that could be an explanation too. wrapping the wire in foil tape might help this. Just crazy thoughts, I know.

Some of the 15” MacBook pros' need the bottom installed to boot. They have fingers that are compressed and make contact. If you are saying the indicator on the side is interfering with charging, that is surprisingly common. You can leave it disconnected if need be. Also, AVOID the cheap batteries on eBay and Amazon. They are garbage and just waste your time. Good luck.

This doesn't seem to answer the question at all.

I am afraid if you soaked the whole unit in alcohol, the heat sink paste is probably ruined? If the unit seems to get hot or shut off spontaneously, I would consider taking it apart AGAIN, and cleaning and relating the heat sink with fresh new thermal paste. You can clean the old paste off with Alcohol, do you see why that worries me ;~)

I love how all of these say "back up the phone". That isn't helpful with a dead handset.

It's extremely rigid.

No, that's nonsense

The little flange that holds the wires and fastens onto the hinge screws should go on top of the hinge and not below? Just a thought.

Yes, this voids your warranty.

Double check the connection from the battery to the logic board and the logic board socket itself... Might have damaged by disconnect/reconnect.

That's a bad idea. using a metal tool to pry off glass is likely to end with an expensive broken front glass.

Suction cups are common. Find a couple and do it the safe way. I use some cheap ones that came with iPhone repair kit.