Goldring Support

Zerostat - Q. How can I test whether my second generation Zerostat from the 1980s is functioning?

Answer:

It does not require batteries or maintenance as it works from the piezo electric effect and you can check if it works by squeezing the trigger really quickly – if there is resistance, and it clicks, it is generating 30 kV.

If the atmosphere is very damp, it may not click so an alternative is to hold the needle point very close to a grounded metal surface (such as a radiator) and you will see sparks when the trigger is pulled. You have to find a protrusion though to stick inside the muzzle because the needle has to be almost touching.

During normal use, you need to pull the trigger gently so that it doesn’t click, as demonstrated in this video.