Which sources did you use? Please provide some specific information. If you want help, be specific. Samsung has been notorious for changing production in these sets and there were several lamp/ballast combinations used, some which are not compatible.
Give the entire service model number with all suffixes, the part number for the lamp specifiec on the set, the same for the ballast if it is present, the chassis version number, the part numbers and suppliers that you used, and any other information that you can think of that you used in the process. I will be happy to try to sort out what you have, but I cannot keep probing for information.