I've got a weird issue that I'll run by the forum before I e-mail MHDT. I can't get a lock on RCA/Coax SPDIF, but I can get USB to lock. This is an older Havana that just started acting up. It acts like it wants to lock for a brief second and flickers into the blue + red (power / error) state. Anyone experience the coax going out on them? Also - @Luckbad - where did you find the larger toroid? Thanks.