Just received the BS-712 for my 9th anniversary, to replace my OBS of 12 years that went up in flames last weekend.
Read the manual, took it outside dropped in 6 pucks plugged it in set the temp and smoke timers for 2 hours.
Everything seemed good. Walked back into the house to read more on these forums and heard a loud racket.
Went back out side to listen and the fan was clanking like crazy and slowing down, eventually came to a stop and the smoke started pouring out the vents and the feed tube.
I was hoping everything I read about them wasn't going to be true of mine but after only running about 5 minutes and it giving up I guess its true.
Now I wait until the OBS goes on sale again.