JYE Tech Forum

Is there an answer to this question? as I am experiencing the same exact issue.

Indeed it was a short being created by excess solder between the switch and the board. I was able to remove the switch with a hot air gun and clean up the board. The problem with the weak signal is gone!

Many thanks to you.

NOTE: I've learned from visiting these forums that my DSO138 is a clone, and I will be making enquiries with the seller and taking appropriate measures to purchase a genuine or fully open-source unit next time. Greetings! My recently built DSO138 exhibits a very weak trace during calibration (please...