What was found
ETOP FWD EQUIPMENT OVERHEAT LIGHT ILLUMINATED, FOLLOWED QRH CHECK LIST LIGHT ILLUMINATED AGAIN, RETURNED TO DEPARTURE. TROUBLESHOT IAW FIM 21-58-00-815-833 BLOCKS 1, 2, 3, 4, 5 AND 28. R & R EQUIPMENT COOLING INDICATION CARD IAW AMM 21-58-24-00-001, OPS NORMAL. ACFT BACK IN SERVICE.