Thank you for contacting National Instruments. You shouldn't try to repair or change anything on the board by yourself. If you change any component or try to repair it you loose the warranty; in addition, we can't support your board anymore since we don't know if your modifications changed the physical characteristics of the board.
I suggest you to contact the phone support at 1-800-IEEE-488 (1-800-4333-4888) and send your board for repair.
Roberto Piacentini Applications Engineer National Instruments http://www.ni.com/ask