I just modded my GC with a crystal orange clear case. It works, but when I plug in memory card in either slot A or B the orange light goes off and screen display turns black (if I insert memory card when GC is on)!. If I start GC with memory card inserted orange light wont turn on and output on screen stays black! The only memory card I have is a Gecko SD-card adapter, GC refuse to run even when the SD-card adapter is empty (no SD-card attached), I think thats strange since Gecko adapter is just a passive adapater with no electronics inside it. Do you think I screwed up during installation of crystal case? (I dont know since I did not test GC before mod with Gecko adapter and the GC I got second hand came with no memory card but 4 games (which is strange). Thanks!
Could either be you've knocked, damaged or made a lose connection to something on the GC itself or it could be that the USB Gecko is damaged and shorting out the positive and negative connections it's recieving and so is causing a power problem and the console PSU is turning itself off.
But the fan is still running when display goes black. I opened up the Gecko and it was a clean job, its the DX version. edit: I put a bit of tape on the pin on the Gecko and it is pin no 12 that is screwing things up. Pin 12 is "sence" but pin 1 is also "sence" and they are connected to eachother on the Gecko. So I will have to order a mem card from DX to find out if normal mem cards are giving me troubles too. I just put a bit of tape over pin 12 and GC is booting fine now. Going to try a couple of Isos and Swiss/loader tomorrow when I got some DVDr.