I got a TS-440 from a friend for free, with the hopes that I can fix it and eventually use it on the air as a backup rig. The first issue I've found is it doesn't seem to recieve. No band noise or signals from the internal speaker, nor from the headphone jack. I even tried to use the data hookup to my computer and see if audio comes out there, but apparently the interface I use with my 450 is different than the one I need for the 440, so results there are inconclusive. I do have access to an oscilloscope, and I'm looking for where to start tracing the audio signal to try to see where it's gone bad. Also the goop issue seems to be non-existent on this rig, I don't see any evidence of it inside, so I'm assuming the previous owner removed it, thought I plan on looking closer at a later time.