problem after a measure of a capacitor charge!!

[alexmarines]

hi,

i need of help!!

i measured the capacitance of a capacitor 470uf 25V before to discharge it!!
now if i try to do the calibration,it doesn't do it!
if i try to read the capacitance,it's incorrect and it doesn't display the esr!

please help me!!

[alexmarines]

i tried to read R1 in circuit and it's read about 0.24 kohm.
i have to read it offline of circuit?
it should be 1ohm?
other components that i have to test?

[support]

i tried to read R1 in circuit and it's read about 0.24 kohm.
i have to read it offline of circuit?
it should be 1ohm?
other components that i have to test?

ABSOLUTELY!
R1 must be equal 1ohms
need to be replaced!

[alexmarines]

thx,

do you say to change only R1 or i have to check other components?
which are the diodes for the protections?

thx

[alexmarines]

now it's strange!

i put solder always on the same R1 and now i read 164 ohm!!

why?

[support]

now it's strange!

i put solder always on the same R1 and now i read 164 ohm!!

why?

first replace R1 with resistor 1 ohms, no need to short it

[alexmarines]

ok..i will change it..

which type is this resistance?

1ohm how many watt?

only this R1 or do you think i have to check other components?

[support]

wattage any you want 
first change then will see

[alexmarines]

ok thx!
tomorrow i will change it!
i hope to solve!!  :-(

[alexmarines]

i didn't find the smd resistance of 1 ohm!
can i do a bridge of solder without use the resistance or i will have problems?

[alexmarines]

i done a bridge of solder witohout use the resistance of 1 ohm and now the esr meter works again !!!!! i can do the calibration
only a question..
if i connect the probes on the left side i read 1.05  9.2 and 104  ohm.

befor of the problem the measure were precise.
how i can correct it?

[alexmarines]

if i try to read also the capacitance of a capacitor of 3.3uf  i read with esr 3.89uf and with my multimeter 3.69uf!
before i had the problem they had the same measure!
now i don't know if the esr is also correct!
can i adjust the precision of the capacitance, esr and the resistance?

[support]

need to set 1 ohm!
as programm calculates all values using 1 ohm value! in your case it will use "0 ohms" instead
you can use  any resistor, not only smd

[alexmarines]

then..it's important to use a resistance of 1 ohm.
i put also a smd resistance of 1 ohm and it was with all the tollerance 1.20ohm and i had the same incorrect value of capacitance.
is it normal because the resistance is not precise and i have incorrect measure?
i regulated also the two regulators on the circuit..i did mistakes now??

[alexmarines]

can you tell me the tollerance for the resistance?
because that i have put is a smd resistance of 1 ohm but if i read the value with multimeter i read about 1.20 ohm.

thx