09-04-2014, 06:28 PM
I have a blue line 6550 SVT that I totally recapped, replaced anything out of spec, and re-tubed. The amp came up fine and distortion free for about five minutes. Then it blew the 10 amp fuse in my variac. It will power up in standby but blows the fuse as soon as I flip the standby switch. The primary on the power transformer reads less than one ohm. Is that normal? Does anyone have vintage SVT transformer specs?
There wasn't any smoke, smell, or sparks. What's the best approach to isolate the problem?
There wasn't any smoke, smell, or sparks. What's the best approach to isolate the problem?