After many years of flawless operation recording church sermons from the PA mixer board something happened to my JukeBox recorder V2. I loaned it to someone else to do the recording. Because the unit timed out and shut off just before the crucial moment the fellow had to fumble his way through the menu to find and start recording. Maybe it's just coinsidence but one input channel is now defective. The VU meter of the bad channel is always pinned at full scale even with no input. Looking at the output in an audio editing program shows the output of the bad channel to have repetitive spikes with the bottom half of the audio signal mostly gone.
Is this a hardware problem or can something be reprogrammed? Can an input channel be overloaded to the point of damage? Can a defective input jack cause this?
Thanks