DVM810

[lionelkjh]

Good evening everyone! I am looking for the main integrated circuit mounted on a multimeter DVM 810 (chip on borad). Is this an ICL 7106 ?? Does anyone have the schema ?? Thank you for your help!

[retiredcaps]

Is this an ICL 7106 ??

That would be my guess.  What is wrong with the meter?

[Armadillo]

$6.69, it would be cheaper to buy the kit.

http://www.apogeekits.com/digital_multimeter_dmm810.htm

[Armadillo]

Pin 1 is the +ve of the battery supply voltage;
Pin 26 is the -ve of the battery supply voltage;
Set the meter to voltage mode or current mode and confirm 100mv is at Pin 36.
Edit: Probe at Pin 38 with a digital logic probe, confirm there is clock oscillation.
Use your fingers to touch the circuit traces near the Pin 27 to 31, you should see the LCD digits change and jump randomly.




The attached circuit is the closest [DVM830] for your reference.

The chip normally does not fail alone.

It would be cheaper to buy the whole kit/meter and wiser.