If you prefer to watch a video of disassembly/reassembly for the home button diagnostics, I have successfully completed the whole process ;) You can see it here:

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Apple iPad 1st Gen Home Button Malfunction - disassembly & repair (https://www.youtube.com/watch?v=lYwuIyFI...)

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Even though I had a replacement home button board ready, it wasn't needed. Sometimes you just need to clean up contact pads and/or make sure that spring-loaded pins are not stuck. This unfortunately still requires screen removal, which means that some of the screen clips are going to break, that's just how it is :(

If you prefer to watch a video of disassembly/reassembly, I have successfully completed the whole process ;) You can see it here:

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Apple iPad 1st Gen No Power Fix - disassembly & battery replacement (https://www.youtube.com/watch?v=3eEbdCMr...)

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So you can see screen removal and reattachment, motherboard removal, battery replacement etc. This even includes replacement for the infamous screen clips ;)

The clips WILL break, at least some of them, so don't stress about that. These are cheap to replace, but if you don't have somewhere to source it from you can usually get by with the remaining intact clips. You really don't need all of them to be in place! You may want to re-distribute the clips though, as often you will have one side with almost all clips intact, and one side where all clips are broken.

If you prefer to watch a video of disassembly/reassembly, I have successfully completed the whole process ;) You can see it here:

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Microsoft Surface Pro 4 - screen bulge fixed, battery replaced, SSD upgraded! (https://www.youtube.com/watch?v=3eEbdCMr...)

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So you can see non-broken screen removal and reattachment, motherboard removal, battery replacement, SSD replacement etc. I even managed to keep the screen intact after all was said and done! ;)

And as few people mentioned, avoid temptation to skip motherboard removal unless you know exactly what you’re doing (and if you’re reading this, you’re probably not). It is a bit more hassle to disconnect a bunch of stuff on the motherboard, but it makes it A LOT easier and more importantly SAFER to remove and reinstall the battery. Shorting motherboard is a real thing, and fixing that problem would be a whole lot more difficult than removing the motherboard. So just do it the right way, you will be thankful later ;)