EAR 834P Phono stage. Buzzing sound

[MikeHit]

Newbie here.

My EAR 834P has recently developed a sort of buzzing sound half way between rapid soft clicks and a real buzz. Could this be valves needing replacing? I am not sure it is a ground hum but I could be wrong.
Also, on the back there is a screw terminal next to the output leads - is this for the ground wire (which I have been fixing to the small screw next to the fuse) or some other function. I have looked for manuals but cannot find any online.

Thankyou all in advance for your help

Mike

 

[Roger_A]

Newbie here.

My EAR 834P has recently developed a sort of buzzing sound half way between rapid soft clicks and a real buzz. Could this be valves needing replacing? I am not sure it is a ground hum but I could be wrong.
Also, on the back there is a screw terminal next to the output leads - is this for the ground wire (which I have been fixing to the small screw next to the fuse) or some other function. I have looked for manuals but cannot find any online.

Thankyou all in advance for your help

Mike

Why don't you contact EAR/Yoshino for advice? They still manufacture the 834 phono amp so should be able to suggest what to check or even to service the item if you want to do that depending on cost.

 

[daytona600]

Do you have a spare set of valves to Try out they do fail with age

 

[Al ears]

The screw terminal next to Output Right is indeed the earthing point