2. tech-talk
  3. 1363699118

60Hz humm in Sunfire SRA.

Hi folks I've recently detected humm in my Sunfire SRA stereo amp. A substitution amp/receiver is there instead and with no humm.
I've spotted leaks in few of the filter caps and humm increase if I touch most of the smaller power supply DC caps that also need to be replaced.
What will be the best solution keep to the same brand of replacement parts or go to Upgrade Street? I will need to recap at least 15 caps including filter ones?
128x128marakanetz
marakanetz's avatar
marakanetz OP
5,473 posts
 
replaced filter caps + reapplied solder in all of the boards eliminated humm.
mingles
796 posts
 
Glad to hear you solved the problem. Thanks for sharing. It might be helpful to others down the road. I'd like to replace all the electrolytics in mine, but it's a project I just don't have time for right now.
marakanetz's avatar
marakanetz OP
5,473 posts
 
i just couldn't stand the fact that i will have to replace it! it sounds like class A on any volume setting... rich defined and musical.
More to discover