I have done the mods and added the pot to adjust the SAT.
The instructions are:
I know on many you could have what the GMT has,V/SAT. It involves removing a resistor and
putting a potentiometer in its place,mounting it externally. So if your existing SAT resistor is
say,220k,then if you put in a 400k pot you could turn it way down for a faster speed and turn it
way up for an even slower speed than you already have,if needed. Variable Self Adjusting
Threshold-V/SAT! The 400k pot goes 0-400k,400 being the most resistance it can offer,0
being no resistance. Doing this instead of simply replacing the resistor takes the guesswork
out of hoping you have the right resistor for the speed you want. You can basically tune it
infinitely within those parameters.
Hi Guys.
i am new to the forum. i am also in the process of doing this Mod to my Whites classic SL
i have done the ground and threshold mod to the machine and they seem to be working ok. i have yet to add the SAT Mod to it though as i am still waiting for the resistor for that coming. i would like to try and do a variable SAT Mod to mine. i have heard that you can do a variable SAT Mod using a potentiometer. has anyone done this method to theirs. some info on how you would do/put together a variable potentiometer would be much appreciated.
the R24 resistor replacement. i only replaced that resistor with a 1Meg resistor. i read some were that replacing with a higher one than that can make the machine a bit chatty? is that correct. should i stay with the value that i have added. or put a higher one in?
also am i right that after the mod is done you can use other whites blue max series coils on the machine?
thanks in advance guys.
I think i did.
OK. I went through everything and verified that everything was installed properly with the right resistor values. The gound balance works perfectly, however, I still don't get a background hum for the threshold. The threshold and SAT pots only respond when I pull or push forward the pinpoint toggle then and only then do I get any response when adjusting these potentiometers and may I add it works great.So I just completed the Mr bill Mod and I don't have the threshold hum in search mode. Checked all steps in the process and everything seems OK. I did install a 500K pot with a 2.2M resistor running parallel which gives me a 378K maximum Ohm reading (this is for the variable SAT).
I'm going to pull the wires from the board and make sure I have continuity from threshold VR 4 solder lugs to the other components on the board. I did notice that the lug holes are so small I had to clip some of the small wires strands to get the wire to fit. Not sure if that has anything to do with it but I'm starting to suspect one of the components.
Please let me know if you have any suggestions.
Thanks