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Measurement tools

DT850L digital multimeter voltage measurement

Kasdra
Kasdra
28
hace 5 años
hace 5 años
Hello community, I am new to this forum that has helped me a lot in problems that I have had and until today I decided to register. I ask you to help me with the problem of a DT850L digital multimeter, a few years ago I bought it and the thing is that when measuring the voltage in DC it doubles the values, for example, if I measure a 3v battery it shows me 6v, if I measure a 9v shows me 18v, and in general it does that with every measurement I make. Another detail is that I have to put it on the 200 scale because on the 2 and 20 scale it doesn't register anything. Thanks for your help. P.S. In the store they did not validate the warranty.
Martín LC
hace 5 años
hace 5 años
Hi, it's burned, maybe you made a measurement on an incorrect scale, I have the same and they are very sensitive. Regards.
Kasdra
Kasdra
28
hace 5 años

Hi, what or how can I do it to repair it?
Thank you

Responder
mempun
mempun
1.985
hace 5 años
hace 5 años
In this case, the fault is minor and clear . At the input of the multimeters there is a voltage resistor divider (in series), the resistance between the 20 and 200 scale is cut; as it is cut, mark more in 200 and nothing in 20 and lower. This divider makes 10 MOhm in total, and the resistances are 9M, 900K, 90K, 9K, 900 ..., you have to check them, one of them is cut.
Kasdra
Kasdra
28
hace 5 años

Thank you very much, I will try it and confirm as soon as I do.
Thank you

Responder

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