I lived in Korea and bought Logitech Z623 from America. in Korea 220v electricity, while logitech z623 america 110v. I forgot to check the voltage so the speaker could not turn on. there is a beep and die. what components are broken?
No way to know exactly what's broken, but you are not likely to find parts unless you find a dead unit to use for parts, which may have the part you need also broken.