There is currently a troubleshooting tag which has 29 questions and a tag wiki excerpt of:
A form of problem solving, often applied to repair failed products or processe [sic]
Is it needed, or a candidate for burnination?
I agree that this tag is redundant for this site. I feel that the majority of the (now over 85,000) questions on this site deal with troubleshooting of one sort or another.
Since there are only 29 questions tagged with it, I say it should be burninated.