I bought a PC Engine Duo that was previously maintained. It seems the capacitors have been replaced, but not all of them. The issue is with the audio: when the power is first turned on, the sound is distorted, but after about 5 minutes, it becomes normal. I think (as the board warms up) that's the reason. Other than that, it works fine. Only the console and power cable are included. Please check the photos for details.