FLC OF AN MLG RETURNED TO LAND AFTER THE HI-TEMP TAIL COMPARTMENT WARNING AND MASTER CAUTION RED LIGHTS LIT DURING CLBOUT.

Narrative

AFTER DEPARTING DTW'S RWY 21C; CLBING THROUGH APPROX 2300 FT MSL; THE 'TAIL COMPARTMENT HI-TEMP LIGHT' CAME ON ALONG WITH A RED MASTER WARNING LIGHT. I TRANSFERRED FLYING AND RADIO DUTIES TO THE FO; WHILE I BEGAN TO TRY TO CORRECT OUR PROB VIA COMPANY OPS MANUAL PROCS. (A REQUEST FOR A RETURN TO LAND WITH THE EMER EQUIP WAS ALSO MADE). WE WERE ABLE TO GET THE LIGHT TO GO OUT AND THEN I RELAYED OUR INTENTIONS TO LAND IN DTW TO OUR FLT ATTENDANTS AND PAX. AN UNEVENTFUL LNDG WAS MADE ON RWY 21R. AFTER LNDG WE PULLED OFF OF RWY 21R ONTO RWY 9L AND STOPPED WHILE THE EMER EQUIP INSPECTED OUR ACFT WITH NO ADVERSE INDICATIONS; WE THEN PROCEEDED TO THE GATE. THIS PARTICULAR ACFT HAD AT LEAST 2 PREVIOUS WRITE-UPS FOR THE SAME PROB DURING THE TAXI PHASE THAT SAME DAY (INCLUDING ONE OF OUR OWN). THE MECHS DURING THE COURSE OF THE EVENTS HAD MADE INSPECTIONS OF THE TAIL COMPARTMENT; CHANGED TEMP SENSORS AND MEL'ED THE APU WITH NO POSITIVE FINDING OF ANY PROB (DUCT LEAK; ETC). SOMETIMES; TRYING TO FIX A PROB THROUGH THE PROCESS OF ELIMINATION DOESN'T WORK REAL WELL.