"Mark" wrote in message
...

snip

Can anyone shed any light on this? Why it works when wet?

Thanks,


It probably needs a bath in isopropyl alcohol or, at a pinch, methylated
spirits. Give it a good soak, put it on its side in a warm place to dry for
a hour or two, and finish it off with gentle hair drying.

If that doesn't work, perhaps the variable capacitor or pot has water
contamination inside, or maybe there's some corrosion.

BTW, is the component you don't recognise in a round metal can? It could be
the 'SAW' resonator. If there's any dampness under that then perhaps it
could shift the frequency enough to stop it working correctly.

Dave