DV9000 WITH FAINT DISPLAY BUT DISPLAY WELL IN EXTERNAL MONITOR

THE DV97OO WAS BROUGHT TO MY DESK AND THE CUSTOMER SAID IT DROP DOWN FROM HIS MOTORCYCLE. INITIALLY I THOUGH IT SHOULD BE INVERTER BOARD THAT POWERS THE CCFL BULB EMBEDED IN THE SCREEN, SINCE THE INVERTER VOLTAGES ARE OKAY. BUT THE NEW INVERTER BOARD DIDN'T WORK. SO I CHANGE IT WITH A NEW SCREEN AND IT WORKS, SO THAT TELLS ME THAT THAT IT IS FROM THE CCFL BULB.
SO I CAREFULLY REMOVE THE WHITE TAPE AROUND THE BOTTOM OF THE SCREEN AND REMOVED THE BROKEN BULB.
I GOT A SALVAGED BULB FROM A DAMAGED SCREEN WHICH I USED TO REPLACE IT AND THE LAPTOP WORKS FINE