Hello - first time poster here ...
I have a SC ASR-220C that a year ago I pulled off of a shelf it had been sitting on for 17 years. Powered it up slowly and found everything working except one the 7408's. Got a new (used) one and it played great for 10 months. Developed the dreaded 60 cycle hum two months ago - ordered and installed new filter caps and all was well. About a month ago I started getting occasional, random clicks in the output ... last week it started blowing the circuit breaker. I took out all of the tubes and it still blew. I then removed the wire to first cap after the rectifier and it stopped blowing the breaker. When I measure from that disconnected wire to ground I get 270 volts AC (pin 8 to ground on the 5AR4 - no tubes in any sockets)- it's been a lot of years since I shot a circuit but I'm thinking the power transformer may be shorted. Any opinions would be welcome plus any info about where I might get a replacement transformer.
Thanks in advance.
I have a SC ASR-220C that a year ago I pulled off of a shelf it had been sitting on for 17 years. Powered it up slowly and found everything working except one the 7408's. Got a new (used) one and it played great for 10 months. Developed the dreaded 60 cycle hum two months ago - ordered and installed new filter caps and all was well. About a month ago I started getting occasional, random clicks in the output ... last week it started blowing the circuit breaker. I took out all of the tubes and it still blew. I then removed the wire to first cap after the rectifier and it stopped blowing the breaker. When I measure from that disconnected wire to ground I get 270 volts AC (pin 8 to ground on the 5AR4 - no tubes in any sockets)- it's been a lot of years since I shot a circuit but I'm thinking the power transformer may be shorted. Any opinions would be welcome plus any info about where I might get a replacement transformer.
Thanks in advance.