B757 Captain reports improper maintenance relative to a chronic failure of the left generator.

Narrative

While reviewing the paperwork in Flight Operations; I noticed approximately 5 different problems associated with the failure of the left generator. Upon arriving at the aircraft; I found that the left generator had failed again on the inbound leg. On checking the maintenance release; I discovered that maintenance had simply reset the generator. On contact with maintenance; I asked if they felt that taking no action to actually repair the faulty generator was an appropriate course of action in light of the history of a recurring problem. After conferring with maintenance; local maintenance informed me that the reset was performed so that corrective action could be taken upon the aircraft's return to JFK. I then contacted maintenance through a patch with dispatch. I expressed my concern that the aircraft was planned to be released without a repair actually being made. In my mind; since a repair had not been made; it was almost certain that the problem would recur. I asked that the generator be made inoperative; deferred; and a new flight plan generated that reflected the actual condition of the aircraft with the appropriate limitations -- including that the APU be operated for the entire flight. My concern is that we have cut our maintenance capabilities to the point that we are not able to effect appropriate repairs. In addition; this incident begs the question as to whether we are now trying to mask the true condition of aircraft in order to release a flight. In my view; the philosophy displayed in this case; if allowed to continue; would have a profound effect on safety.