Tuner Issues - KORG TM-60

[Kian]

I am currently having a little bit of trouble with my KORG TM-60 tuner metronome combo. When I turn on the tuner, the tuner scale gets stuck on a B sharp or C major, and when I turn it on in a silent room it has the same issue. Unfortunately it cant pick up any other pitches, other than the one it is stuck on. Any suggestions?

[Len_derby]

Sorry if this sounds too obvious, but do the batteries need replacing? I’ve got a TM-80 and it starts being unpredictable when they are running down.

Edited May 15 by Len_derby