good point T_T
but perhaps I should have been more specific. I pressed the front button and no sounds came out. I pressed the reset button and after a while, I could hear the cyclone sound. then I tested the maximum drive sound, and it broke. I pressed the reset button again and I heard the cyclone sound. then I pressed and held the henshin button, held front button and it worked. pressed maximum drive button and it failed again. after my unscrewing, I corrected the sounds somehow but now they have a lower volume. that's all T_T