markshan
Sir Thrift a Lot
I have an old Radio Shack table radio (solid state) and it has been in regular use for years. I've noticed lately that there is an audible hum (not loud, but noticeable) and a small vibration coming from the unit even when it is turned off. My wild guess is that perhaps the power switch is wired after the AC transformer, and the transformer is humming. If so, it's not really bothersome, but is it unsafe? TIA.