820-3209 orange light no fan spin

[elcapitan]

I'm working on a 820-3209 that shows orange light but no fan spin. I was able to find a short on PP15V_TBT. I relieved the short but still no signs of life. I have gone through the main voltages, s3,s5 and all of them are present. I notice the line PPVIN_SW_TBTBST is 2.5v instead of 12.8v.

Could this be preventing boot up? Any suggestions?

 

[2informaticos]

PPVIN_SW_TBTBST should be 0V if nothing is connected on thunderbolt port.
Is better to remove Q3080, for test.
Post PPBUS_G3H and 3V3_S5 voltage.