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Post time 2019-7-31 15:32:44 From the mobile phone | Show all posts |Read mode
My 2D42 oscilloscope after I used it on the notebook usb it turns on but quickly erases the screen, his system does not start.  what could have happened?
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Post time 2019-8-1 08:34:16 | Show all posts
Please give us a video to study.

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 Author| Post time 2019-8-1 09:14:38 | Show all posts

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Post time 2019-8-1 11:58:12 | Show all posts
Just out of curiosity, what where you measuring with the scope when it was connected to the USB?

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 Author| Post time 2019-8-1 12:10:37 | Show all posts
the dc level of a 9v battery

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 Author| Post time 2019-8-1 12:11:52 | Show all posts
do you know what might have happened?

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Post time 2019-8-1 16:47:53 | Show all posts
Please send a message to me caiyijun@hantek.com

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Post time 2019-8-1 23:12:21 | Show all posts
Giancarlo replied at 2019-8-1 12:11
do you know what might have happened?

Hard to say for sure. If you have the option, return it for the seller and get a new one in exchange. If that is not an option, then send an e-mail to Hantek's support and wait a few days for a response.

And finally I would open up the device and check the power supply rails, luckily it will be just a busted voltage regulator that can be easily replaced.
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