Sorry to to thread jack you but, if the chart is uninterrupted and I can still follow my jig without a break in its trail, could it still be a bad connection? The plugs have no corrosion but I've never checked if they are seated properly.
I also wanted to send mine in for service because when I power it off, I can't turn it back on unless I remove the head from its mount then plug it back in, or disconnect then reconnect the battery.
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