Laid down 5 tracks last night, all went well. tried one this morning--Zip. Using a condenser mike. Phantom power lites lit., meter up in the green, looked good, except I could not hear any monitor. The track is very faint on playback. Other tracks fine. Switched cables, inputs, channels, mikes, even went to a SM58(phantom power off), same result. Called Tascam. waste of time. Anybody got any ideas?