This page was created due to the requests on why the Victor Zapper does not charge the Zap Cap properly, above 20 volts. The problem is due to the high current pulses going thru the step up transformer which is a direct result of the low resistance of the transformer windings inside the Zapper. With these high current pulses the step up transformer is over heating with continuous use and
is burning off the enamel coating on the wire inside the transformer.
When this happens it shorts out the windings and does not give you the proper step up voltage required to charge the Zap Cap. This is indicated by the burning smell when you remove the top cover of theZapper and the burn marks on the transformer. SEE THE PICTURES BELOW. ( only remove the 6 screws around the outside edge of the case on the bottom and the 2 screws on the top where the ni-cad is connected ) At this point you have to replace the power transformer.
Information on where to purchase a new one is listed below.
Picture of Burned and Shorted Transformer
I have done some extensive testing of the Zapper and most of the damage is caused from trying to charge the Zap Cap above the default voltage of 70 Volts and extended usage without an adequate
cool down period..The Zapper takes much longer to charge from 80 to 99 volts as you well know, and this increased time places a burden on the transformer and causes the above problem. Try to use the default value.... also I have found by moving the tap wire of the power transformer you will reduce at least 50 % of the heat generated in the transformer, But......it makes it very hard to charge the Zap Cap above 80 volts. If you do not go above the default value ( 70 volts ) which I use, the charge time to go thru the cycle only changes by a second or two. I would rather wait an extra second or two for the cycle than to worry about burning the transformer out!!
Original wiring of the Transformer Tap
Modified wiring of the Transformer Tap
If you require a power transformer here is where you can get one!
Signal Transformer Co., Inc
(Insilco Technologies Group)
500 Bayview Avenue
Inwood, NY 11096-1792
U.S.A.
Phone (516) 239-5777 Fax (516) 239-7208
Part number of the Transformer is........DP-241-7-20