Hey everyone, I have a Pionner SX-650 and I would like some help with it. It works good except it does not work on Phono or Aux. I have a service manual for it but I still need some help. I’ve worked on this receiver a little. I recapped the power supply board but that’s it. I bought this receiver used and it came with the Phono and Aux broken already. Also when using the tape function only one speaker works on stereo but on mono both speakers work. Any help would be appreciated since I’m a beginner at this.