Introduction

This teardown shows the internal circuitry of a digital multimeter.

Parts

No parts required.

  1. Remove lead connectors from front panel.
    • Remove lead connectors from front panel.

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  2. Turn over the DVM and unscrew the two screws using a J1 bit.
    • Turn over the DVM and unscrew the two screws using a J1 bit.

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    • Remove battery by gently disconnecting it from connector.

    • Remove three screws using J1 bit.

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    • Remove PCB by gently pulling it away from the back encasing.

    • Microprocessor

    • Continuity Check Speaker

    • Fuse

    • 9 V Battery Connector

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    • Remove the knob and buttons from the front grey casing.

    • The measurement knob uses two ball bearings that allows the knob to rotate. These bearings are small and easy to lose.

    • Backlight Toggle Button

    • Measurement Hold Button

    • LCD Plastic Cover

    • Measurement Select Knob

    • Measurement Select Knob Ball Bearings

    • Success! You have finished tearing down the multimeter.

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Finish Line

Michael

Member since: 01/23/2014

359 Reputation

2 Guides authored

Team

Cal Poly, Team 10-32, Maness Winter 2014 Member of Cal Poly, Team 10-32, Maness Winter 2014

CPSU-MANESS-W14S10G32

4 Members

6 Guides authored

One Comment

Don't take the contacts out of the rotary dial. It's very easy to forget where they go

Oliver Watson - Reply

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