The most common and most likely answer to this crossword clue is the 12 letter word TROUBLESHOOT
I've seen this crossword clue in The Daily Telegraph
T
R
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B
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More clues leading to the result TROUBLESHOOT
Buddy explains!

The straight part
We know that "Solve problems" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case solve problems = troubleshoot.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TROUBLESHOOT mean?
TROUBLESHOOT verb- To analyze or diagnose a problem to the point of determining a solution.