My Virus b will not start - when I power up the screen was first blank, with the two LFO Rate lights solid. I tried the global reset (hold LFO1 Shape button upon power up) which didn't help, so I did the RAM reset (hold LFO1 & LFO2 Shape buttons upon power up) which at first looked like it worked but now the startup screen just keeps flashing slowly. Any advice is greatly appreciated!!