オリジナル投稿者： Flak Monkey ,
I had the same issue. Controller used to work fine, but after a few years I discovered it wouldn't synch. I tried my other guitar with the USB dongle and that synced, so I knew it was the guitar. I replaced the 220uF @10v capacitor on the main circuit board and it fixed the problem. Probably a good idea to also replace the 47uF @10v too, since the factory components are poor quality.