Out of the pile of whites I recently accumulated... I decided to see if this one worked. After install 3 9v batteries, it fired up. As I tested the one and only knob on it...,it went bunk....broke...and quit. The original knob is two functions ...turns on and rotates for discrimination. I decided to add a seperate power switch. And a new disc potentiometer....I first used a 10k and that just didnt work good at all...it would only beep on high conductives,There was no range. So I put in a 20k and it worked flawless. Here are some pics.....the board on these are much smaller then the slimline boxes. I do want to ad ground knob, and sensitivity knob. And the resistor change ,with different vaule resistors then what the bill mods call for. I want it a little less sparky.
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Whites classic 1 square box disc knob and power switch mod
- Thread starter JJdigs
- Start date