all of a sudden my speakers wouldnt turn on, i checked the fuse and it seems to be blown, i emailed technical support and they insist that i do not touch anything and either use the warranty or send in for replacement, the thing is i bought these on ebay from an online retailer as a remanfactured item. on the back it says 4 amp 125volt slow blow, i bought some 4 amp 125volt "fast acting" fuses from radio shack, put one in and it blew right away, twice. im not to electrically inclined so any help would be appreciated. thanks