LED lighting tube conversion from fluorescent bypassing ballast

Greetings! I have been purchasing LED tube units from Costco designed to replace 48 inch long fluorescent lighting tubes.  The power conversion circuit built into them is designed to connect to the existing functioning ballast in the fixture.  I am looking for someone that might have knowledge on modifying the circuit to receive power from the 120V line in order to bypass a non functioning ballast as I don’t want to purchase new ballasts.  I took one apart and took pictures of the circuit but I don’t know enough about electronics to figure it out.  I would really appreciate it if there was someone reading this that might want to take it up as a challenge.  I checked on YouTube to see if anyone out there has done this but am out of luck. It could be an interesting Idea for someone to create an instructional video and post it.  Thanks!