Wonderful guide, this rescued my tablet. Just a couple of minor observations:
After making the fix it seemed like disconnecting the speaker cable may not have been required. It seemed like it might have been possible to unscrew the speaker assembly but still leave it attached by its cable. That would mean steps 7 and 8 would be skipped.
Also had a problem budging one of the 2.3mm screws (left side) in step 13. But it was okay. I didn't think that it was necessary to use a smaller screwdriver as was said by another commenter. The #00 phillips was sufficient imho.