guys i really am confused, my meter works the opposite way!
measured all voltages and are correct.
TP7 is connected to a 10K trimmer, the middle point of the trimmer is connected to the + of my 50uA meter, - of meter to TP8.
R22 is now 1500, still not working. replaced it with a 10/20/50/100K trimmer, i got strange results.
the most confusing issue is : when powering the meter it goes to 30uA, no matter what i do with the trimmer is impossible to bring it to zero uA !
moreover, when i measure a resistor, if it is 10ohms the needle goes to 10uA , but when i measure 20ohm resistor it goes to 20uA, meaning that with higher resistances the needle goes right not left!
how is this even possible! can't find any mistake!