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Hantek 2D72 problems

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Post time 2023-2-1 09:01:33 | Show all posts |Read mode

Customer consultation

I have a Hantek2D72 and was having a problem with it. After turning the device on there is no displayed measurement value on the screen, the only thing that is displayed is the connection diagram and the measurement type. i have updated the firmware on it and this did not fix the problem. any help is would be appreciated.

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 Author| Post time 2023-2-1 09:06:07 | Show all posts



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Is the measurement data of the multimeter not displayed? Don't all the gears of the multimeter show? If there are other problems, please provide relevant videos for our better reference.

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Post time 2023-7-6 02:21:03 | Show all posts
I have the same issue. Attached is a picture of the display. The Scope and AWG functions work fine. It is just the DMM has no value displayed, even 0. I have updated the firmware and the problem persists. I am willing to replace components if it is a hardware issue. I could not find any user replaceable fuses.



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 Author| Post time 2023-7-6 15:58:43 | Show all posts
Edited by Jing at 2023-7-6 16:01
Satur9 replied at 2023-7-6 02:21
I have the same issue. Attached is a picture of the display. The Scope and AWG functions work fine.  ...

Dear Sir,
Please follow the following figure to test.



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Post time 2023-7-6 23:57:03 | Show all posts
I checked the crystal and it is definitely not operating correctly. Attached is an image of measuring it with another scope. I also couldn't detect any voltage across C46.

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 Author| Post time 2023-7-7 15:25:57 | Show all posts
Edited by Jing at 2023-7-7 15:27
Satur9 replied at 2023-7-6 23:57
I checked the crystal and it is definitely not operating correctly. Attached is an image of measurin ...

Dear Sir,You can replace a 4M crystal oscillator.
Test again for 1,2 in the figure below. 1 is DC voltage, 2 is AC voltage, see if this transformer has 3.5V.


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Post time 2023-7-14 01:04:00 | Show all posts
This is the measured value on the transformer side you labelled 1


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Post time 2023-7-14 01:04:48 | Show all posts
This is the measured value on the transformer side you labelled 2


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Post time 2023-7-20 22:29:44 | Show all posts
I'm at a loss here. Not sure what components to replace. It definitely seems like some components that manage these oscillations have failed and need to be replaced. Without making a detailed schematic breakdown and modelling, I'm not sure which ones.

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 Author| Post time 2023-7-25 14:02:07 | Show all posts
Satur9 replied at 2023-7-20 22:29
I'm at a loss here. Not sure what components to replace. It definitely seems like some components th ...

Dear Sir,
Would you like to replace 4M crystal oscillator? Is there a multimeter that can test the above mark 1 and 2?
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