Hi - I have recently had a problem with my Hi-Fi model SC-AK640. it also shows the F61 Fault code. i dicovered it when my right speaker stopped working. I then tested it in the left speaker socket and it worked. It started off by right speaker not working and then the hi-fi would still stay on and play music and then suddenely stop and show F61 on the display screen and then turn off. Sometimes the subwoofer would not work at all, so music was only playing through the left speaker. This started yesterday and today as i turn the radio on it displays F61 and turns off! Can u maybe help? Thanks luke

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