I replaced my disc drive with a known good disc drive and put the old disc drive motherboard on the new disc drive to ensure there wouldn’t be a pairing issue but after i plugged everything in and checked if it was working there was no power to it at all.
Check all your ribbon cable connectors. Check that they are fully seated in the disk drive logic board and the main motherboard connectors.
You likely damaged one of the ribbon cables it’s easy to do
Sounds like a ribbon cable issue…check to make sure all the ribbon cables are seated correctly and not damaged in any way.