If the module does not respond at all (e.g. by touching the antenna) it's
probably faulty and has to be repaired.

Best wishes
Dieter Doepfer

> Hi All,
> i have just bought a second used A-178 Theremin module. Unlike my
> first one, which works fine, this one powers up, but doesn't
> respond to any input from the antenna or movement of its
> controls. I've tried switching antennae, connectors, etc, but
> it's stubbornly unresponsive. I can't see any physical damage to
> it. Before I give up and send it in for servicing, does anyone
> know of a common fault with this module which I may be able to
> fix with my limited abilities
> Cheers,
> Chris