I have a samsung hcm4215w which was made in november of 2002. I am able to manually move the red and blue convergence in all directions through the menu, i can get them lined up decently good but they do not stay for long. They slowely misalign, i would have to adjust 5 times just to watch a movie. I have tried saving them after i adjust and going to different menus to try to adjust them. So i took out my convergence board, i have stk392-040 irs. I dont see any blown pico fuses or anything that looks fishy. I dont know if changing these would fix my problem, i dont know which reputable source to order them from. Also i have never soldered before but believe i could do it. Do i just need to replace the IRs or resisters and fuses? lcaillo please help!