Currently Being ModeratedJul 29, 2012 8:52 AM (in response to generalgrog)Re: Spider Valve MkII HD100 keeps blowing fuses
The main things that would concern me with any kind of blowing fuses are, incorrect bias, incorrect Ohms match of head and cab, bad or wrong speaker cable, tube age, or unmatched tubes. The tech you took it to the first time should be a liscensed line 6 repair shop or a at least a credable tube amp repair shop, and they should have checked those things out, If in fact all those things were addressed, the problem could be on the board itself.
Currently Being ModeratedFeb 8, 2013 1:23 PM (in response to generalgrog)Re: Spider Valve MkII HD100 keeps blowing fuses
I just had a similar problem after only 4 months of ownership and less than 20 hrs of use. Quick searches on google show that we are not alone with this issue. Kind of scary.