Ok I figured out my Whites classic SL originally a one knober, Now three. I was having trouble power balancing it. First I had the sensitivity too high. When the two resistors are replaced on the board and a ground knob and sensitivity knob was added I did not realize I need to turn the sensitivity down to about 5/8 this power.... Then I was able to get a positive or neg. Reading while I adjusted the ground knob. I have hunted about three hunts so far.... Fairly deep machine....the silver dime I found on the edge of a field that had been turned around 6" deep with a good pop sound.... Deeper targets at a park were tricky...still working on learning the 6b coil language. The disc knob accepts foil way below my other Whites classic machines in the past. 9 o'clock on my old idx blue max style machines would disc out foil. With the classic 6b coil foil is discrim around 7..... Plenty of fine running to go BUT wait !!!
I have a pile more machines to mod test and frenkenstien up !
I have a pile more machines to mod test and frenkenstien up !