Once you have the keyboard removed, check your inverter cable plug. Mine wasn’t seated properly (hardly at all), so I reconnected the display cable and keyboard, then I turned on the power. My display was back up! I didn’t actually need the new cable after all.
Before you move on to the next steps, just check that inverter cable plug. It’s in Step 31. It may save you some time and a big headache.
Be careful, the plastic slot breaks easily. Mine broke, but it went back together okay. Seems stable.