I have what appears to be a mid 1960s Zenith AM/FM tube alarm clock/radio. I don't have the model number handy, though I can scan in a picture of it if necessary.

Sounds like by the mid 1960s Zeniths didn't use Solenium rectifiers so I may be ok. Is there a way I can check which it has?

Just in case, though, is there a danger leaving it plugged in? Since the clock works I'd like to keep it plugged in. If I follow this thread correctly, it sounds like Solenium rectifiers could short out even if the radio is turned off but plugged in. Is that same danger present with an alarm clock/radio unit?



Thanks,
Joe