I'm having some problems with my B2R and wonder if anyone else has experienced this. Equipment: 4 space rack with B2R, Behringer compressor and Furman PL-Plus into an 8 ohm SWR WM4x10. When line voltage levels drop below 110v the amp will go into a kind of cutout mode but it acts like the output goes full DC. The speakers will extend to their fullest travel and stay there. I know this is not good for the speakers and get the amp shut down as quickly as possible. Unfortunately, this happens intermittantly and always at an inopportune time. The fan is working and the amp is very clean inside and out. No cooling vents blocked with dust. The amp does get warm but not too hot to the touch. It doesn't seem like it would be thermal shutdown because I would like to believe that the output would shut off not shove the speakers out. I have opened the amp to clean and like I said, it's very clean. Some dust but nothing out of the ordinary. Date code stickers inside show August and September of '94 quality checks. I visually inspected for suspect components and such and found possible cracked solder joints on a couple connectors. I touched up these joints just to be safe but don't really know if this could be the problem. I work as an Electrical Tech but have very little experience with audio equipment, especially of this type. Has anyone out there experienced this problem or maybe something similar? Maybe I could save myself some time and money by fixing this myself if I knew where to look. Thanks for any and all input.