This is the third Saturn I've modded. The other two worked great. The chip I used was from Lan-Kwei. Standard 21 pin with two lines to solder and a jumper for which type of 21 pin machine you have. I modded it last saturday and it had been working great. Then tonight out of the blue it stopped detecting CD's. I tried a few original games (both US and Japanese discs) and they all failed to detect as well. Senseing something funky I desolder the mod and took it out and viola, real discs worked again. But when I put the mod back in all discs stopped working. What would cause a chip to suddenly die like that after normal operation? Think it's a defective chip? Did it overheat or short? Ideas are welcome. I'm trying to figure out if I should take my losses and order another mod elsewhere or if this mod was in fact defective and I should try to send it back. Thanks.