JYE Tech Forum

I did some continuity tests on the main board, without the analog board connected, and no power (after several days). From DGND i see continuity to all of these: V+, 3.3V, VDDA, GND, *all legs* of voltage regulator U3, 1 leg of power socket J7 No continuity from DGND to either leg of diode D2, TRIG,...

Here's a photo of my main board

I purchased the DSO Shell kit from banggood (board p/n 109-15000-00E2) and tested that LCD powered up with some loading screen before assembly, and then disconnected power, but I didn't pay much attention to what was on the screen. I carefully soldered the parts in step 1 and removed R30, then appli...