hello i finally completed the repair of the ex508.! so glad! as. shown on the first pic I had to find a way to connect the 2 boards despite a circuit damage. I used 2 pieces of metal welded on another part of the switch board to reach the main board. (hope it's clear) speed adjustment,cleaning... done! listening to music now. sound is much more better when it comes from a freshly repaired walkman ! at least this one is a success, thanks to @Valentin again and @Cassette2go! A602 is waiting for me (capacitor to check) thank you for reading, see you soon b