A B737-200 RETURNED TO THE FIELD DUE TO UNABLE TO PRESSURIZE THE ACFT IN ANY MODE CAUSED BY ALL PRESSURIZATION SYS CIRCUIT BREAKERS OPEN.

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WE DID AN AIR TURNBACK BECAUSE THE ACFT WOULD NOT PRESSURIZE IN AUTO; STANDBY; OR MANUAL MODES. WHEN WE PULLED BACK INTO THE GATE; THE FO PULLED HIS SEAT FORWARD AND WE FOUND 5 CIRCUIT BREAKERS OUT. MAINT HAD BROUGHT THE ACFT FROM THE HANGAR AND WE DID WHAT WE THOUGHT WAS A NORMAL PREFLT; WHICH ACCORDING TO OUR PROCS INCLUDES 2 CHKS OF THE CIRCUIT BREAKER PANELS. AFTER WE WERE AIRBORNE AND THE ACFT DID NOT PRESSURIZE; WE LEVELED AT 1000 FT AND I ENGAGED THE AUTOPLT; GAVE THE QRH TO THE FO WHO WENT THROUGH ALL THE PROCS. AS WE WERE CLBING; THE FIRST THING I THOUGHT ABOUT WAS CIRCUIT BREAKERS SINCE THE PRESSURIZATION PANEL DID NOT APPEAR TO HAVE ANY PWR TO IT. WHILE THE FO WENT THROUGH THE QRH; I PULLED HIS L ARMREST FORWARD TO CHK THE CIRCUIT BREAKER PANEL BEHIND HIM. JUST AS I WAS DOING THIS; ATC GAVE US A VECTOR HDG AND A DSCNT. I LOOKED AT THE CIRCUIT BREAKERS AND ACKNOWLEDGED ATC; BEGAN THE TURN AND DSCNT; AND WE RAN OUR CHKLISTS AND MADE A NORMAL LNDG. 3 TIMES WE CHKED THE CIRCUIT BREAKER PANELS AND 3 TIMES WE APPARENTLY MISSED 5 CIRCUIT BREAKERS OUT. SUPPLEMENTAL INFO FROM ACN 387267: I LEARNED THE ACFT HAD BEEN IN MAINT BUT NO LOGBOOK WRITE-UP CONCERNING PRESSURIZATION. THE FO'S OXYGEN HOSE BLOCKED THE 4 CIRCUIT BREAKERS; AND I ACCIDENTALLY MISSED THOSE BREAKERS DURING THE PREFLT.