This is how I replace the ballast in a T8 fixture. You can convert a T12 to T8 as well. Fluorescent bulbs are very dangerous if you cut yourself with one so be careful. I am not an electrician, just a DIY person. Shut off the power so you don't electrocute yourself.
The other thing to worry about in terms of
some electronic ballasts is the ballast making
a loud "pop" sound when a fluorescent lamp
reaches EOL... you also have to worry about
the bad end of the bad bulb melting the socket.
suzukir123 4 months ago