Just got my DSO203 from SAIN. It has HW version 2.72, SYS 1.60, App (PLUS A1) 1.10.
I decided to calibrate it. Started with CH A.
Followed the directions given on the screen:
At this point I was still good, adjusting a few % here and there.
Then I got to :
I set the voltage gen to 55. At this point, the probe got hot. I disconnected it.
Now, the CH A is short, it measures 170ohm. (And obviously doesn’t measure anything).
CH B and Wave Out still work.
I am able to solder surface mount components, if you guys can point me to which component needs to be changed.
Also, I need to know how to remove the metal shield (or if I need to remove the metal shield to get to the circuit).
Did I do something wrong during the calibration ? I know it says not to exceeded 80V pp, and I was way bellow that.