a1707 820-00281

[ipetro]

stuck at 5v/0.000a
all 4 sides on JB500 ports stably hanging at 5v/0.000a
all 4 sides on J3300 ports cyclic switching on 5v/0.000a
no short circuits detected

 

[2informaticos]

Compare diode mode readings around all CD3215 chips.
S-UEM2 can also help, comparing J3300 and JB500.