Remote Volume Control Issue with Arcam A75 Integ

I purchased an Arcam A75 Integrated Amplifier in 2001. Recently, the amplifier is unresponsive to volume adjustments made by the remote control. I also have the Arcam CD72 CD Player volume control from its remote also does not work. All other functions work fine on the remotes so my initial conclusion is that there may be an issue within the amplifier to either interpret the volume requests from the remote or the motor that control the volume nob is not functioning appropriately. Anyone dealt with an issue like this? Any advice on how to fix this? I live in New York City - is there a dealer or repair service you can recommend?

Thanks,

Mark