Hi, all: Working on an R2670B that seems to be in great shape with lots of options. Unfortunately, this unit has no audio from the speaker, but you can hear it if you connect a speaker to the Demod out port. Also, the sensitivity is very weak over the air. I replaced the fuses in the antenna connector and generate connector and all of the generate functions appear to work fine, as does receive via the I/O port, but not so much on the antenna port. Any thoughts on where I can look, or is it time to cut my losses or does this seem like something that can be repaired? Thanks!