Products > Test Equipment
SDS7102 no buttons or trigger working anymore
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tomatos666:
Hello,

I have a problem with my SDS7102.
The buttons and trigger are not working during measurements.
The SDS7102 is still measuring and displaying the data correctly, but I can no longer change any values. I have checked the flat ribbon cable that connects the buttons to the mainboard.
After reassembly, the oscilloscope worked normally for 3 minutes, but then the same problem occurred again.
Has anyone experienced the same issue before and found a solution? |O
I have tried reaching out to Owon, but unfortunately, they have not responded to my inquiries. :-[
tomatos666:
Hello,

Unfortunately, no one has reported the same issue.
I have disassembled the oscilloscope again and taken measurements.
The encoders are not switching cleanly in some cases. Some of them remain stuck in the high state. I have attempted to switch all the encoders to low at both the output and input. However, the problem still persists. The oscilloscope remains inoperable. Could attaching capacitors potentially provide a solution?
I also noticed that as soon as the encoders go high, there isn't a clean 3.2V signal present; there are many disturbances. Is it possible that the ICs 74GC4051 and/or 74HC393 are damaged?
The ICs are registering a voltage of 3.2V.
Whitefoot:
I don't have a clear answer to this. One time I went to use my SDS7102, none of the encoders worked. I shut it off and didn't try it again for about a month. It worked fine and still does. Maybe being off long enough reset something?
tomatos666:
Hi, thank you for your response.
I don't believe it will start working on its own. I'm unsure about the underlying issue.
I've already added a 100nf capacitor to the encoders, but there's been no change. After that, I've desoldered all diodes on the encoders, but still no improvement.
My next step is to replace the 74HC393D and 74HC4051D components, hoping that this will bring the device back to functionality.
Some one know´s where i become parts for this tyoe of scope?
Owon it self dosnt help!
tomatos666:
I'm afraid I haven't seen any significant changes.
I haven't received a response from Owon.
The local Owon dealer doesn't feel responsible.
The SDS7102 is being disassembled further and further. Unfortunately, I haven't been able to pinpoint the issue.
Here a video what I have made it that’s show the problem. https://youtu.be/BqU3ueHhXDo
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