Allnic H-3000 hum when mute button engaged.

if you reach out to Albert Porter, he may be able to help guide you, with all the appropriate disclaimers. Never heard of this problem, but dig mine. He might also be able to tell you the age- there was a running change on the unit roughly 5-6 years ago involving transformers and a few things in the power supply. 
Love mine. 
Roll the rectifier tube- lot's of threads on that subject. Big differences, and some of the good ones aren't crazy money. 
enjoy~

+1 whart!

Speaking of interconnects, can you say more about your other components? Are you running the H3000 in balanced or SE mode? Is the hum in both channels? (I assumed so, since you probably would have mentioned it if the hum was in only one channel.) If you're using the SE outputs, you might try switching to the balanced outputs, or vice-versa.

Hi Lewm,
Here are the list of my components:
 Garrard 301 with 2 tonearms:
Moerch  DP-6 with ZYX Aries 3 Moerch  Phono Cable
Polstar PS-UNV2 with ZYX Omega Gold, Polstar phono cable
Allnic H-3000
Homemade Silver IC
Shindo Aurieges
Shindo Interconnect
Shindo Montille EL84
Belden Speaker Cables
Devore Fidelity The Nines

I dont have any balance IC to try for now.
I will switch my homemade IC to the MIT avt1 IC to check.
 Thanks for the suggestion.
Calvin

Also the hum in both channels and only at the Mute Position.