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Title: CH1 Stop measuring Hantek DSO1200 [Print this page]

Author: redfox086 Time: 2017-11-13 21:58
Title: CH1 Stop measuring Hantek DSO1200
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.

Author: amy Time: 2017-11-14 16:54

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

[attach]1797[/attach]

Author: redfox086 Time: 2017-11-15 01:45
Hi,
thanks so much for your answer, I'll try it!!
A greeting

Author: redfox086 Time: 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 much.

Author: amy Time: 2017-12-8 11:08

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.

Author: pretender Time: 2017-12-14 00:34
On Aliexpress there is

https://www.aliexpress.com/item/ ... ty/32807745585.html

Author: redfox086 Time: 2018-5-14 23:06
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.

Author: amy Time: 2018-5-15 10:17

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.

Author: amy Time: 2018-5-15 10:18

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.

Author: redfox086 Time: 2018-5-15 15:10
Ok, I uploaded a youtube video in the following link. https://youtu.be/Npw5flnQvqg
Thanks so much.

Author: amy Time: 2018-5-15 16:26

redfox086 replied at 2018-5-15 15:10
Ok, I uploaded a youtube video in the following link. https://youtu.be/Npw5flnQvqg
Thanks so much.

Sir, did you do self calibration after you replace the chip?
If not, please disconnect and probe and cable to the input connectors, power on and wait for 30 minites.
Now start self calibration.
After that, if the problem exists, please let me know.

Author: redfox086 Time: 2018-5-25 14:42

amy replied at 2018-5-15 16:26
Sir, did you do self calibration after you replace the chip?
If not, please disconnect and probe a ...

I tried that and now it works perfectly! It was solved.
thanks so much for your help!

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