Sounds like a heat-related problem. If you buy a can of electronics freezer, you can localize the fault by spraying it on specific components until you get it nailed down. Probably a solder joint.
Looking for repair service for EAR preamp
I have an EAR 864 preamp (an old timer!) with the integral phono stage. The line stage section, which utilizes two tubes, has developed a crackling sound in the right channel after the unit has been on a while. I've tested the tubes and even exchanged them to be sure, but the problem persists.
I have tried to contact Dan Meinwald at EAR USA for a recommended service facility but he has not responded. In the past he was always quick to reply and forthcoming with information. I hope all is well there.
Bob Backert serviced my EAR 868 not too many years ago but he has become quite busy building his preamps and apparently is no longer taking repair work.
Can anyone on this forum suggest a reliable service technician who would be willing to fix this wonderful old preamp?
Many thanks in advance for your suggestions,
Fred
I have tried to contact Dan Meinwald at EAR USA for a recommended service facility but he has not responded. In the past he was always quick to reply and forthcoming with information. I hope all is well there.
Bob Backert serviced my EAR 868 not too many years ago but he has become quite busy building his preamps and apparently is no longer taking repair work.
Can anyone on this forum suggest a reliable service technician who would be willing to fix this wonderful old preamp?
Many thanks in advance for your suggestions,
Fred