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Cen-Tech Seven Function Digital Multimeter . Model number 90899.

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Why won't the screen show any readout?

I want to use my multimeter to test a battery. The banana plugs are attached and cords are attached to the device, but the screen is not reading anything. My device is turned on and seems to be functioning otherwise.

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2 Answers

The reading screen is either broken or malfunctioning. You may need to replace the screen. See screen replacement guide here. If this does not seem to fix the problem, you may have an issue with the motherboard. Click here to see how to replace the motherboard.

Cen-Tech Seven Function Digital Multimeter Mainboard Image

Guide

Cen-Tech Seven Function Digital Multimeter Circuit Board Replacement

Difficulty:

Easy

5 - 15 minutes

Cen-Tech Seven Function Digital Multimeter Screen Image

Guide

Cen-Tech Seven Function Digital Multimeter Screen Replacement

Difficulty:

Easy

10 - 15 minutes

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I'm all for fixing stuff and keeping it working, but Harbor Freight literally gives these meters away. They're not worth fixing. i have a stack of spare ones still in the package waiting to be used.

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Anna Kihm will be eternally grateful.
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