Mcintosh Volume control acting erratic

Depending on how many compnents you want to program into a remote I have the marantz RC1400 and love it. I had the RC2000mkII and that was good but not enough memory. But I run my whole system 9 componnents with this little remote and a couple of macros. I like the ability to punch through other component functions to each component screen.

As an Authorized McIntosh repair center, we have had more than 2 Optical Encoders fail (one in an MX-132 and another in a C2200 I seem to recall) and they reflect your exact symptoms when failing. Take her in for service and McIntosh will take care of you.

My problems is not only does it get stuck, but it changes on it's own. I have a computer modem within 3 feet and am wondering if that could cause it.

I don't think the modem is the culprit here. Mcintech has the best advice.