Hi, did you fix your PS3 Black screen problem. I have the same. I have here 1 working PS3 with 3.55 Kmeaw and I find out that all you need from bluray part is the bluray board, you can disconnect the Bluray drive completly, just leave the small board connect. When I disconnect the small board im having blackscreen after playint any pkg. but with the board connected, is ok and multiman works. Even about 40% dowloaded games work to (without bluray drive).
But my second PS3 doest act like that, even only with the small board connected i'm having those black screen. So our problem won't be in bluray. I've seen some tutorials with HDD issue but even witch different HDD it acts same. Any ideas ?