Synergistic Orange and purple fuses popping


 

Synergistic Orange and purple fuses popping


I recently upgraded all my gear with the new Synergistic orange and purple fuses (15 in all) What a difference! My Cary SLP-05 preamp with 8 Vintage Tungsten  6SN7 tubes is having problems with the Orange and Purple Synergistic fuses in the power supply. For some reason when I turn on the preamp amp after warming up the powersupply unit, the 2 power supply fuses pop. So far Synergistic has been gracious and replaced them twice now. I increased  the 2 large slow blow fuses from 1amp to 2amps after asking Cary audio what I should try. I also spoke with Synergistic and they agreed their fuses are sensitive but all the stock fuses I ever used have worked flawlessly. Any body out there with any similar problems and maybe a solution? Any upgraded hi-fi fuses that may be less prone to popping? I think it may be due to a current rush (tube related) when I go from off to on. Help!

Thanks

gregtheis

Showing 1 response by highstream

@gregtheis -- I just read the initial posts. Since you went up 1A, go up another amp or two. I did that successfully throughout my system with the SR Orange, with only one failure in a preamp when I plugged in ICs for subs (tho they weren't powered up). As you discovered, SR is very aware of the turn-on "rush" problem with some components, but has in effect refused to build their fuses to UL industry standards. Most, but not all, developers over spec their products a few multiples to avoid having lots of warranty returns, given the variety of user situations. Asking is a good idea, because some don't (seems like poor design, but I don't really know). Alternatively, consider Audio Magic's Ultimate Premier fuses, which are built to industry spec and really good -- I've just burned in a couple -- or the even the pricier Quantum Science fuses out of Hong Kong or thereabouts, which have been highly reviewed on What's Best Forum. And keep ignoring the naysayers.