Velleman DVM850BL Digital Multimeter Teardown
This teardown shows the internal circuitry of a digital multimeter.
필요한 것
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Remove battery by gently disconnecting it from connector.
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Remove three screws using J1 bit.
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Remove PCB by gently pulling it away from the back encasing.
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Microprocessor
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Continuity Check Speaker
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Fuse
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9 V Battery Connector
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Remove the knob and buttons from the front grey casing.
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Backlight Toggle Button
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Measurement Hold Button
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LCD Plastic Cover
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Measurement Select Knob
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Measurement Select Knob Ball Bearings
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Success! You have finished tearing down the multimeter.
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댓글 2개
Don't take the contacts out of the rotary dial. It's very easy to forget where they go
This web page seems very helpful. However is it necessary to remove the micro processor or front knobs and buttons if all is working fine? What meter do you use to check the fuse? This one when the battery is changed? LOL And why does the print and photos change size when I try to scroll down the page after I reset it to 100 % ? Am I using Windows 10 wrong? Thanks