They used to use a florescent lamp(s) to light the screen. They can be replaced, but if you are not doing it yourself the labor is likely non-economic.
“They used to use a florescent lamp(s) to light the screen. They can be replaced, but if you are not doing it yourself the labor is likely non-economic.”
WAY easier just to replace the whole LCD panel, but even then, with an old laptop, not usually worth the expense.