Hi Dave,
Sorry I wrote "cinch" , but you are right for RCA jack ! ..a small difference between Europe and American contient !
To fix your FT890 you sholud print the schematic of the "technical supplement" (service manual). You can find on the net ()
AF out is comming from AF unit, but the signal goes to Monitor unit, then to AF volume knob, then to audio amplifier on AF unit again ! ...then to rear speaker jack, and finally to speaker
With printed schematic and a oscilloscope you can fix it !
good luck :-)
73 JMat F5RCT
