Search found 3 matches

by psurry
Fri Apr 24, 2020 1:39 pm
Forum: DSO Shell
Topic: Help: main board in reboot loop during initial assembly
Replies: 2
Views: 4375

Re: Help: main board in reboot loop during initial assembly

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,...
by psurry
Sat Apr 11, 2020 1:53 pm
Forum: DSO Shell
Topic: Help: main board in reboot loop during initial assembly
Replies: 2
Views: 4375

Re: Help: main board in reboot loop during initial assembly

Here's a photo of my main board
by psurry
Sat Apr 11, 2020 1:49 pm
Forum: DSO Shell
Topic: Help: main board in reboot loop during initial assembly
Replies: 2
Views: 4375

Help: main board in reboot loop during initial assembly

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...