The fluorescent tube in our garage has started playing up.
It fires up and is OK for a few seconds, then goes off, and re starts within
a second or two.
The starter was replaced around 3 months ago as the tube struggled to start,
so I thought it would now be the tube which must be around 20 years old.
Exact same problem with a new tube.
That kinda suggests it might be the ballast, but could a faulty starter
cause this sort of problem or is it effectively out of circuit once it has
done its job?