I bought from fasttech the mods 30 module to build a regulated box - after it being back ordered for several weeks and when I finally got it if failed within about a minute I did notice that when I went to file my warranty claim at fast tech they have pulled that product off of their site. I think they might have gotten a bad batch of chips I know I soldered and wired everything correctly it just failed. must have some quality issues there. I've had that problem with a vamo v5 chip. I got from them also.