I just got my v12r amp back from Cary for a check up. When I shut the amp off my left 1/2 amp fast blow fuse goes out on the left side. It does not happen when in standby, and works fine after changing the fuse and turning the amp back on. Yesterday I shut the amp off, and before I turned it back on, I took the fuse out and put it back in, then fired up the amp and the fuse did not blow. The bias is around 238 or so on each side. Hope this helps out. polk432