EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: limbwal on December 28, 2017, 07:24:24 am
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I just got my meter about a month ago and I went to measure current, and I can't on the milli or micro amp range, only on the higher amperage range, everything else looks fine. I took it apart and I can't see anything obvious. I didn't take the panel off so I might be missing something. Anyone know what this might be? Or, what my best course of action going forward would be? Thanks in advance for any help or advice.
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Check the fuse.
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:-/O
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would that be a possible issue even if voltage measurements are working? Aren't they on the same fuse?
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The fuses in the meter only protects the uA/mA and A range. The fuse is not required for volts or ohms measurement.
Your mA fuse is likely blown (open).
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Yes - thank you I see that now - I checked the fuse and it is indeed blown :palm: - where can I get a good quality replacement?
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you can use piece of wire
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Yes - thank you I see that now - I checked the fuse and it is indeed blown :palm: - where can I get a good quality replacement?
Normally we'd point you to Daves shop but he's out of stock ATM.
https://www.eevblog.com/product/multimeter-fuse-pack/ (https://www.eevblog.com/product/multimeter-fuse-pack/)
He does sell DMM's on Amazon, check there to see if they're holding stock.
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I am sure Dave will sort something out for you if it arrived open circuit.
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you can use piece of wire
No, you can't just use a piece of wire! >:(
The next time the OP makes a mistake he could damage his meter, or his meter and himself, depending on the power source!
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Good ol 'use a wire or small calibre bullet' jokes ;D
Big NO on that!!! :o
Get the correct fuse and spares (!)
AFAIK you should still be able to use the meter safely for everything except current measurements in the meantime :-+
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Good ol 'use a wire or small calibre bullet' jokes ;D
Big NO on that!!! :o
Get the correct fuse and spares (!)
AFAIK you should still be able to use the meter safely for everything except current measurements in the meantime :-+
When I read the post with the piece of wire first, I thought of answering that one of us should drop by and replace all the fuses in the poster's home with pieces of wire (or solid metal).
Then I saw where he comes from and suddenly recognized that this has been probably already done.
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https://www.youtube.com/watch?v=I5qcnNgpyik (https://www.youtube.com/watch?v=I5qcnNgpyik)
They also did a video sticking a bullet into a fuse holder in a car. Some bullets got shot there! But can't find the video on youtube :-(
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The jumpwire thing or soldering a wire across blown fuse, or jamming in a glass fuse cheapie, ALL THREE FIXES HIGHLY NOT RECOMMENDED may work for a responsible user with an inline external fuse/s of a similar value or lower,
to ensure a fast blow if a low current test goes south as they can do sometimes x lots...
WITH reminders on the meter to replace the fuse ASAP or yesterday
Fused leads are a winner too but ONLY if correct value HRC fuses fitted for the application at hand, otherwise the meter PCB becomes the fuse
LOL, please ignore this comment based on optimism ::) and just fit the correct fuse in the meter :-DMM
Best to avoid Murphy scenarios and subsequent upcoming 2018 Darwin Awards as much as possible >:D