What was found
LIFTING OFF OUT OF KVNY & CHANGING THE DECK ANGLE, GOT TAIL TANK HVY CAS & TAIL XFER SOV CLSD CAS ILLUMINATED. FUEL APPEARED TO BE DRAINING INTO TAIL TANK. REACHED 1900 LBS. LEVELED OFF AT 6000 & PROCEEDED WITH CHECKLIST & INTIALLY PRIMARY XFER FOR TAIL TANK WAS WORKING. DUMPED FUEL OUT OF TAIL TANK & SEVERAL MIN LATER GOT PRI TAIL XFER CAS. GOT AUX TANK HEAVY CAS & SWITCHED TO THE SEC XFER PUMP. SEVERAL MIN AFTER THAT THE SEC TAIL XFER CAS & THIS LEAD US OUTSIDE OF OUR CHECKLIST AND WE THEN OVERWEIGHT LANDED IN KLAX. REPLACED FUELS SYS COMPUTER WITH A REPAIRED UNIT IAW AMM 2841-13-000/4000-801 & PERFORMED A SATIS SELF TEST IAW AMM 28-41-13-740-801, INSTALLED FLOW SWITCH ASSY IAW AMM 28-15-19-400-801