820-00165 spins orange light, No backlight Board boot loop after hitting login screen

[2informaticos]

"On this boad its called u7100, just checking thats what you meant as there is no isl6259 on this board."
As seen in schematic, U7100 is ISL6259...

"17 is 0.659 k ohm
18 is 0.655 k ohm"
I told you need to swith to ohm scale when measure between the pins; use diode mode to ground.
In fact, I didn't ask about resistance to ground on U7100 pins: "Post some voltages for ISL6259"

So, I'm waiting you reply...

 

[KuroAkita]

Sorry my bad i misunderstood. ill need to do a bit more research tomorrow on my day off, my boss went ahead and replaced the isl chip anyway. Ill get you voltages afterwards if its still not working.
thanks!

 

[KuroAkita]

Okay good news. replacing isl brought us back to the last step. it turns off in bypass mode but dies without bypass.
r7151 is 8.56
r7152 is 8.56

 

[KuroAkita]

He just replaced u5600 himself, now were getting 4v, so he replaced it the again and were still getting 4v.. im heading home now but ill check again on monday.

 

[2informaticos]

Why was replaced U5600?
Now must check for knocked off components, or broken traces.
Also check solders on the U7100.
And once again, I asked for the ohm value of R7151/52; resistor value, not resistance to ground, nor voltage.
I asked voltages for some pins of U7100, but never saw them...

When you get back PPBUS_G3H with correct value (8.5-8.6V), then check SMC_BMON_DISCRETE_ISENSE voltage.