I am trying to figure out why my unit reads temperature no problem but nospeed? Needle just sits at zero. It never went wonky or anything just quit working. Tried a couple different new batteries, tested rca cable. Tried the damp cloth trick over receiver for better signal, checked coated cable. Nothing seams bad. Did a visual of circuit board nothing obvious. Curious if anyone has had this problem and a fix? Been tough without it with the currents. Sent from my iPhone using Lake Ontario United mobile app