ABORTED TKOF.

Narrative

DURING THE THROTTLE ADVANCE FOR TKOF; WE HAD NO EPR INDICATIONS ON EITHER ENG. ON RETURN TO GATE; WE CHKED EPR GAUGE CIRCUIT BREAKERS. THEY WERE IN. WHEN THE MECH CAME IN TO THE COCKPIT; HE CHKED THE CIRCUIT BREAKERS AND CONFIRMED ALL WERE IN. DURING THE TROUBLESHOOTING; WE CHKED THE CIRCUIT BREAKERS AGAIN AND NOW THEY WERE OUT. WE RESET THEM AND THEY WORKED NORMALLY. I CHK THE CIRCUIT BREAKERS ONCE WHEN I ENTER THE COCKPIT FROM A STANDING POS AND SUPPORT MYSELF BY PLACING MY ARMS ON THE SEAT BACK (B-737-200). THEN I MOVE MY HEAD FORWARD AND BACK TO CHK THE CIRCUIT BREAKERS. I ALSO CHK THE CIRCUIT BREAKERS FROM THE SEAT WHEN I READ THE CHKLIST. BOTH TIMES I NEVER SAW ANY CIRCUIT BREAKERS OUT. I WENT BACK TO SEE IF I COULD HAVE MISSED THEM AND FOUND IT MIGHT HAVE BEEN POSSIBLE BECAUSE MY R ARM COULD HAVE BLOCKED THE VIEW OF THESE CIRCUIT BREAKERS EVEN IF I MOVED FORWARD AND BACK. HOWEVER; I COULD HAVE SEEN THEM FROM MY SEAT; BUT I MIGHT NOT HAVE HAD ENOUGH ANGLE FOR LINE OF SIGHT TO SEE THEM OUT. HOWEVER; BOTH THE CAPT AND MAINT ALSO CHKED THEM. I ASSUME THAT THE CIRCUIT BREAKERS WERE POPPED WITHOUT BEING OUT.