820-00165 no blk no lcd

[peterfixit]

logic board repair- water spill
----------initial testing----------
no backlight no lcd, powers on, chime, fan spin, green light
------------inspection report-------------------
corroded- j4800, pad 1 J8400 competely oxidised, tpad cable, tpad conn tpad side, j8300, c8317 pad 1 missing, c7713, D7701 missing, d7701 pad 1 and 2 missing, c7795 missing, c7796 pad 1 missing.
------------repair report-------------------------
J8300 replaced
wire run from J8300 pins 3/4 to C8317 pin 1
C7713 replaced
new D7701 pin 1 attached directly to L7701 pin 2
new C7796 pin 1 directly attached to D7701 pin 2
wire run from pin 2 D7701 to pin 1 C8317
replaced J4800
replaced tpad cable
replaced tpad
--------------previous technician damage report-----------------
tpad connector and tpad connector cable damaged by previous technician
corrosion cleaned by user eliminating clues
insertion and removal marks found on lcd connector cable

after testing everything seems to work fine, ive installed istat menus and CPU system agent core is reading 0c, does anyone know which sensor this is attached to

 

[dukefawks]

Getting an image is the first thing to be fixed. Tried a known good LCD assembly? J8300 properly soldered?

 

[peterfixit]

Only the last paragraph is my question, the rest is history

 

[peterfixit]

the macbook has been returned to the customer as repaired, I just want to know what the CPU system agent core sensor is

 

[dukefawks]

Some name that iStat has made up and could be totally incorrect. Could be the digital core temperature, who knows. Just run built in diagnostic to confirm no sensor errors and do not trust a 3rd party application for that.

 

[peterfixit]

Ok thanks, closed