INTEL NUC BOXNUC8I3BEH - shot circuit in almost all capacitors

Hi friends, today i have a BOXNUC8I3BEH to repair. Fisrt, looking this forum, i found a CI (SM3303) in short circuit, i was replace this and problem with power suply gone, but now i know other CI with problem caused inicial problem with SM3303. In this case almost all capacitors are in shot circuit in negative point, with positive point. see picture below





square with red line are in short circuit, in blue looks good
i can't found boardview to check cirtuit lines.

Thanks for all help.

Hello!

- Specify the resistance to ground on any pin of highlighted resistor.
- Measure the resistances on all coils in reference to the highlighted resistor.

Hi friend, thankyou

mensuring resistor to the ground = 0.00 ohns
mensuring resistor to the coils = 0.00 ohns

as picture:

rodrigok писал(а):mensuring resistor to the ground = 0.00 ohns
mensuring resistor to the coils = 0.00 ohns

It's strange there resistance is so low. Check the whole board for any mechanical damage or "dross solder".
If everything seems fine, perform a short circuit test described here on measuring resistor. Make sure to use thick enough test cables (at least 1.5mm^2). For a short circuit test limit the voltage to 1V.
You may need a bench power supply with a high current capability (up to 10A) to find a shorted component.

after remove coils A, B and C and both this two capacitors, with continuity scale, negative in point R, positivite in coils we have this mensurings

Point R to:
A= 479
B= 507
C= 490

with resitor Ohn scale positive at point R (scale 2000K)

A=1560
B=1434
C=1277

i'm starting belive this board have a problem in APU core i3- 8109U, because i have a lot of short circuits in various capacitors, both sides os this board.

Measure the resistance on points "A", "B", "C" in reference to the measuring resistor. The coils must be removed from the board. Perform the measurements with the multimeter on Ohm mode of course.