I just got my Darksoft-Kit last night and have similar problems. I posted it on VLOP forum and here is what I wrote and hope someone here can help me out. Thanks
I have a similar problem last night when I tried to put this kit together. My "B" board is Revision 6 with G Pal and my LCD screen show the games and flash write once I select a game, and say "done" have fun, but the only thing show on my screen is "SCR1,2,3, Object, Work" and across from it is "Ram, Ok" but nothing else. I then tried with the key-writing wire harness, then my LCD screen goes blank like yours and the Darksoft board have no power. Once I remove those key-writing wire harness, then it goes back to what I mentioned earlier. After trying different games in the microSD card with encrypted only, decrypted games only, and with both for hours, I'm giving up. I was so excited to have this kit as I was like the last one to get it too before it was out of stock at Paradise Arcade Shop. Finally got it sent home, but so disappointed as I stayed up late till 3:00 A.M. Please, anyone know what might be the problem, guide me through hoping to get this kit running. Thank you.