https://www.youtube.com/watch?v=o2_SZ4tfLns
Worth a watch (why doesn't this board have embed?)
Minor nitpick :
The bent pin on the lcd cable is staged as fuck. Pins don't bend by themselves like that even if you open and close the lid 1000 times. It can only happen if you unplug and replug the cable wrongly. And coincidentally it's the backlight power pin? Yeah, right. But it's minor, since the whole point is to expose Genius ripoff
Are all Geniuses like that? Only if they're on front counter duty. They have to serve dozens, if not hundreds of customers a day. Their job is to perform a quick check on the spot and give a rough estimated quote and that's it. They don't have the time to take it to the back, open it up, dust off the crap and closely examine under a microscope what the issue could be. Hell, I don't even have microscope at my workplace.
If the customer agrees to the quote, that's when the unit gets taken to the back. That's when guys like us (I work at an Apple Authorised Repair center btw), open it up, dust off the crap and painstakingly diagnose the issue. But we still have dozens of repairs a day and pressure from Apple to give a quick turnaround time so we can't spend too long looking at it. And if we find corrosion or faulty components? We quote the whole fucking part.
We don't do component repair, because we're not trained to. NONE of us are. We take a new replacement part which has been guaranteed by Apple to be functional (it's on them if it's not), test it to ensure the problem is resolved, then give the customer the final quotation. If he agrees, we replace the part.
And the faulty part? It gets sent back to China where Apple's legions of Chinamen repair drones do the component repairs, run some basic tests to ensure the current is flowing properly and whatever, give it a stamp of functional approval and the fixed part get recirculated back into replacement stock. Do they do proper thorough testing? HAH! When you're paid like $1.50 an hour and working 12 hour shifts who cares about quality control?