My IA-7 was upgraded to V3 about a year ago. Yesterday when I found it did not have sound even when there were 3 LEDs lighted up in the volume. I tried to switch off the power and power up it again 30 mins later. However it could not power up. I left the power off for the night and tried to power on again this morning but it was still the same (no power, no light).
Can anyone advice what shall I try before I send it for repair? Thank you.
