I finally got my OB-8 out of storage and when I turn it on I get no sound. After I replaced the battery, I tried loading the factory patches. I could hear the audio file via the mono output, although the patch load failed. That's the only time I heard anything. I tried loading the patches again many times and heard no sound each time. I would imagine these two problems are related.

This is my first attempt at electronic repair and would love to tackle this myself. Any ideas what I could look at first

Thanks, all!

Jeff