HELP ME SILVER UMAX

[roccocoin]

A greeting to the forum as well as administrators and moderators.
I give my help hoping someone can help me:
I have a silver umax treasure and i do not work well since cuts and turning the sensitivity on the red dot does not give me more max \ boost downloads so does not have as much sensitivity as I could do or what could i change? Does anyone have the electronic scheme to post to see the sensitivity on which component works? A real heartfelt thanks

[kt315]

to help you i must buy the detector from US seller, waste much time on to draw the schematic etc.
so expressively expensive way... while my job is given me only 100 euro in month.

[ashefr10]

Hello, it is possible that the brackets of the knobs are broken or the knob is cut, otherwise check if there is not a resistor cms in series that is cut I had the case on a detector.