sorry to jump on this post but put a nearly new KHS-400C v7 (if i am right)laser in a v4 machine and it uesd to stay on the browser for a min or 2 and then deside to load this happend to all original dvd movies/games put the same laser in a v7 system that i got and worked 100%
have to get a laser for the v4 system do you think spedmetal new KHS-400C or KHS-400B