As a follow-on question to: Why fluorescent lighting tombstones melt? I do not know what caused a massive current to melt the tombstone: was it the ballast?
The MELTED tombstone will be replaced, however, if after the tombstone is replaced AND the installed ballast lights up a new bulb: what is the decision process to determine if the ballast should be replaced?
If it was the ballast, then it would be ideal if it would disqualify itself by simply failing to start bulbs. At worst it would continue to start bulbs and melt tombstones.
If the ballast is the root cause of the ballast, then shouldn't it be replaced? If this is the correct question to ask, how does one go about determining if the ballast is NOT the root cause?
If it is not the right question, then I would appreciate the experience of the community weighing-in.