2: Check about a form of power (5)
 3: 'Ransom'?  Lame.  Run 'Rocky I', 'II', 'III', etc. (5,8)
 4: Went ahead and used the power button (7,2)
 5: Turns violin over to get pointers? (5)
 7: A requirement to supply food (9)
 8: Essentially, what boy is wearing (3,2)
 9: Prisoners drawing in some light colours (7)
 11: Mild guess: I die reassembling a nasty weapon (6,7)
 15: Dumb moans cracked up investigator of complaints (9)
 16: Heartsore, Kate raced back to embrace the custodian (9)
 18: Group of lawyers, cast aside and embarrassed (7)
 21: Star found in sugarbowl (5)
 22: Release pressure after energy incident (5)
 24: Alternative part of course (5)