I recently purchased a ps2 v12 and I want to install a modchip in it. However, I decided to install the neofix xiii first (it came with the chip). The problem is the ps2 doesn't read discs anymore, it just says "there is no data" even though the disc is in the tray. It worked before I installed the neofix, so that is the obvious problem. But it appears that I soldered all the points correctly, so I don't know why it isn't working. I doubt it is the laser itself, since I completely removed the laser assembly before installing the neofix. If anyone can offer any help that would be greatly appreciated.