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CH1 Stop measuring Hantek DSO1200

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Post time 2017-11-13 21:58:46 | Show all posts |Read mode
Hi my name is Jose,
I have an oscilloscope Hantek DSO1200. I was measuring with my oscilloscope and suddenly stop measuring and the signal line began appears on the top of the screen. I checked the system setting, reset the device and it continous with the same problem. The channel 2 works perfectly but not CH1.
It seems that it's an electronics failure... How can I solve? What kind of checks can I do?
I attached a pic with the osccilloscope measuring. Thanks so much a greeting.

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Post time 2017-11-14 16:54:13 | Show all posts



Sir, please try to replace the chip U30 in the following picture.
The model of the chip U30 is SST5912/LF.


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 Author| Post time 2017-11-15 01:45:07 | Show all posts
Hi,
thanks so much for your answer, I'll try it!!
A greeting

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 Author| Post time 2017-12-7 20:41:45 | Show all posts
Hi again,
I'm looking for the chip and I can't find it. Do you know where can I buy it?
Thanks so much.

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Post time 2017-12-8 11:08:35 | Show all posts
redfox086 replied at 2017-12-7 20:41
Hi again,
I'm looking for the chip and I can't find it. Do you know where can I buy it?
Thanks so mu ...

Sir, please try to use SST5912 to replace.
You can purchase it on ebay or amazon.

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Post time 2017-12-14 00:34:27 | Show all posts

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 Author| Post time 2018-5-14 23:06:05 | Show all posts
Hi!
I replaced the chip U30 SST5912LF and it works! but the channel offset changed, 600mV on top. Do you know if can I adjust it?
Thanks so much, a greeting.

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Post time 2018-5-15 10:17:10 | Show all posts
redfox086 replied at 2018-5-14 23:06
Hi!
I replaced the chip U30 SST5912LF and it works! but the channel offset changed, 600mV on top. Do ...

Sir, please disconnect any signal to the input connector, and move CH1 up and down. And give me the videoof these operation steps.

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Post time 2018-5-15 10:18:21 | Show all posts
redfox086 replied at 2018-5-14 23:06
Hi!
I replaced the chip U30 SST5912LF and it works! but the channel offset changed, 600mV on top. Do ...

Sir, please disconnect any signal to the input connector, and move CH1 up and down. And give me the videoof these operation steps.

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 Author| Post time 2018-5-15 15:10:01 | Show all posts
Ok, I uploaded a youtube video in the following link. https://youtu.be/Npw5flnQvqg
Thanks so much.



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