A few weeks ago I was following up an intermittent loose connection in my CRT monitor.
Next time, when I get the picture fault I want to gently nudge a wire or component to localise the source.
I need to use something insulating. I don't know what weird surface transmission effects there are for HT voltages so can someone help me understand which of these four is best and worst for a "nudge stick".
(1) A one foot length of the PVC used for double glazing. About 0.5 inch square in cross-section.
(2) A straight length of plastic taken from an all-plastic coat hanger. Approx 1/4 inch diameter.
(3) A clear plastic one-foot ruler.
(4) A length of wood such as half-inch dowelling. Dry. Painted.