Who is the resident expert on TEAC R2R? I have a 3340s. When i turn it on there is a noise, almost static like, that starts out low and increases over about a 30 second period. The noise is in all channels. Very much like an old tube radio warming up. Once you start playing a tape, both right channels start fading out. Just from my initial glance I am guessing power supply caps and line out card. Any ideas?