Hi Luo: You are certainly Welcome and Thanks for letting us know my 'Quick Fix' worked for you as well. I don't know how much 'voodoo' was involved, but my discovery of the 'Quick Fix' was more like "necessity is the Mother of invention." I too have a Sony DSC-S40 that experienced the dreaded 'white/blank LCD screen problem'. Needless to say, I've been quite happy sharing the fix for free here on the internet. Now that your camera is fixed, take more pics! Regards, Bob The Allens of Allentown, PA USA