Hi Guys/Gals! I am very happy with the arrival of my 1978 Yamaha TC 520, issue is that when hooked up to my Sansui 5050 it plays both channels, but will record radio and turntable in only one channel. I have searched the internet for help. I took her apart and sprayed contact cleaner near jacks and level adjustment and the like. (no joy) I alternated between the play and record button as suggested in another thread. (no joy). I swapped leads in case this was an issue. The only instructions I have with this are for the TC 720 and they are in German and well... Spreck enzy duetch... I don't. Any help would be appreciated. Perhaps I do have her hooked up all arse about but I tried every combination. I have hooked 2 RCA play to tape play, and 2 RCA rec to tape rec, this would be correct yes. Not sure if it matters but the 2 RCA's were one 3RCA's I jsut stripped the white one away and used the yellow and red on each.