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Follow this guide to replace a blown 600mA/600V fuse in your iFixit multimeter.
The multimeter has two fuses: a 600mA fuse that protects most multimeter functions, and a 10A fuse that protects the high current measurement function. The 600mA fuse is easily replaceable, but the 10A fuse is soldered to the board. This guide doesn't cover how to replace the 10A fuse. If you possess basic soldering skills, you can easily replace the soldered fuse with a few additional steps.
If your multimeter stops measuring voltage, resistance, or current, the 600mA/600V fuse is likely blown. You'll need to replace the fuse with the following:
- 600mA/600V Fast-acting, 5x20 mm size
If your multimeter stops measuring current in the 10A mode, replace the soldered 10A fuse with the following:
- 10A/600V Fast-acting, up to 32 mm length
- The factory fuse is 6.3x32 mm, but the space can fit a range of fuse diameters.
- To make this replacement easier, order replacement fuses with leads pre-attached.
Don't install fuses with higher current or voltage specifications, or you may damage your multimeter during use. You can safely install fuses with lower current or voltage specifications—your multimeter just won't be able to operate at its full range.
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Turn off your multimeter.
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Disconnect the probes from your multimeter.
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Use your fingers to pull and loosen the cover lip out of its groove along the right edge of the multimeter.
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Pry and loosen the cover from the bottom right corner of the multimeter.
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Repeat the procedure to loosen the cover from the left edge of the multimeter.
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Pull the bottom of the cover away from the multimeter to loosen it.
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Grasp the sides of the cover near the top to hold it in place.
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Grasp the bottom edge of the multimeter and pull it out at a shallow angle to remove it from the cover.
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Use a Phillips screwdriver to remove the four 9.6 mm‑long case screws.
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Grasp the front and back halves of the multimeter and pull to separate the two halves.
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Use a spudger or your fingers to pry the fuse out of its holder.
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Remove the fuse.
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To reassemble your device, follow these instructions in reverse order.
For more information on how to use your iFixit multimeter, check out this page.
