I bought a spider iii amp in 2008 when I started to learn to play guitar and at the time, the amp only saw a couple of hours of use per day. Life got in the way and I put down the guitar until now. The amp still sounds great WHEN it boots up. Recently, I've found that when I turn it on, I see square blocks in the display screen and it doesn't make a sound. It often takes 5 or 6 attempts to power up before it will boot up correctly. Is there a firmware patch or anything that can be done to help? I hate to think that what is essentially a brand new amp just won't work... Thanks for reading!