Allnic H-3000 hum when mute button engaged.

If you're on the West Coast, I agree with others that Albert Porter will probably treat you well. He may even be able to recommend a repair person in your area of California.  Dave Beetles is also a first rate person. And yes, it would seem fair to have the other guy pay for any repairs. By the same token, I doubt he was aware of the problem, which likely is the result of shipping and "handling".

I am lucky in that Bill Thalmann's shop is only about 30 minutes from my house.

Thanks everybody,
I got the message from the seller. There is the toggled switches on the back of the unit fir changing between Balance and Rca outputs selection. He suggested I check it on first (which i forgot to do). I will do it this evening and report back.
Calvin

Good catch. I didn’t even think of that. Hope that solves the problem.
Then you can get down to the serious business of rolling rectifiers. :)

Hi everyone,
I am happy to report back that the problem is fixed. Its just the switch on the back of the unit. I firgot to switch it back to RCA. (What a stupid I am). Please apologize for my ignorance.
Now I am very happy that the H-3000 is as quiet as a tombstone.
About tube rolling, what are you reccomend? The seller already installed the RCA nos rectifer tube on the power supply. But if you know pf the better tube please tell.
 Thanks 
Calvin

Calvin- quite a few threads on the subject. A lot of the rectifiers are cheap enough that you can try several for yourself and see what works best in your system. I am presently using a GEC U-52, have used a fat base first series Mullard (the earlier metal base is preferred) and there is a military RCA from WWII with a particular getter arrangement that is supposed to be good. (Perhaps that's what's in there). You might look at Dub-Step Girl's Massive Rectifier Shoot-Out (or something like that)-- she does describe the general character of many rectifiers, but I think the results will still depend on the circuit and what you are chasing in the system.
I'm glad the problem was simple to address. Enjoy your new phono stage!