Hey, I'm new here but have surfed the forums for quite awhile now and have a bit of a problem: A few weeks ago I bought a Hartke HA3500 head off eBay from a seller with 100% feedback and 100 sales. At this time I didn't have a cab but 2 days ago I finally bought one! It's a Yorkville Traynor 400 watt. So.. two days ago I tested it out, and it sounded amazing! It was extemly loud at volume 1. The second day I played it, it continued to please me but as I was turning it off it made a weird buzzing noise (nothing too noticable or something that would concern me). Several hours later I went to play again only to find out, that it was quiet and distorted at volume 1. I am just wondering if this has ever happened to any of you and how to fix it. Thanks.