This is probably the same as a bug that's been around for a while.

Basically, if you power down the unit with the AM Tuner active, it stores "AM Tuner" as the "channel" in the flash savearea. Next time the unit powers up, say at work without a Tuner attached, the player reads the savearea, and parts of the player think they are running the Tuner, and parts of the player run the mp3 software path instead..

The standard fix (as has been noted here) is to hit the source button a couple of times, to convince the player that no Tuner is attached.

The "timecode" displays are affected by this bug, as well as the Seek Tool. I don't know what else.

If the player has a recent Hijack kernel installed, then a reboot from the Hijack menu might "fix" that instance of the problem as well. But hitting the source button is simpler.

Cheers

-ml