Introduction

This teardown shows the internal circuitry of a digital multimeter.

Parts

No parts required.

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

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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. 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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Black Friday
Broken doesn't stand a chance.
Remove battery by gently disconnecting it from connector. Remove three screws using J1 bit. Remove three screws using J1 bit.
  • 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
  • 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
  • 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

341 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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