turbodan
Member
Hi All,
Has anyone here ever adjusted the idle current on a NAD C 275BEE? I have repaired a few other unrelated circuit issues in this unit, and once I got it up and running, noticed a small amount of distortion on the right channel. It only occured during low volume passages, which led to believe something was off with the idling current.
The service manual states that potentiometer RV102 should be adjusted to 6.6mV between test points 1 and 2. When i measure the value, it's 0.9mV, and adjusting the potentiometer doesn't seem to have any affect. The odd thing is, the left channel, which sounds ok, is at 0.2mV, and that potentiometer doesn't seem to have any affect either.
Can you think of any reason i wouldn't be able to perform this adjustment on both channels? Or maybe there is something I am missing, haven't worked on a NAD before. I've attached a schematic, and highlighted the relevant pot in green.
Thanks!
Has anyone here ever adjusted the idle current on a NAD C 275BEE? I have repaired a few other unrelated circuit issues in this unit, and once I got it up and running, noticed a small amount of distortion on the right channel. It only occured during low volume passages, which led to believe something was off with the idling current.
The service manual states that potentiometer RV102 should be adjusted to 6.6mV between test points 1 and 2. When i measure the value, it's 0.9mV, and adjusting the potentiometer doesn't seem to have any affect. The odd thing is, the left channel, which sounds ok, is at 0.2mV, and that potentiometer doesn't seem to have any affect either.
Can you think of any reason i wouldn't be able to perform this adjustment on both channels? Or maybe there is something I am missing, haven't worked on a NAD before. I've attached a schematic, and highlighted the relevant pot in green.
Thanks!