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Sorry, I must've had a long day that day. R8162 is no stuff... Not 8167, 8167 is indeed there. I removed R8168, R8164, R8165, and R8166, one by one and ALL_SYS_PWRGD Did not change.
Have a 00165 that goes to full fan immediately upon plug-in (regardless of TP). Checked all rails are present except no VCORE. Noted some solder balls around C1031, but other than that the board looks absolutely fine. All 3.3 V present, all 5V present, all 1.8V present (except VCORE), all 1.2V...
Resistance to ground at pin 1 is 1.23 with screen unplugged. 0 with screen plugged in (suggest short in screen?)
Continuity from pin 1 to D7701- Yes
F7700- good voltage to both sides
U7701:
Pin 5: 5.03V
Pin 18: 5.03V
Pin 17: 3.3V
Pin 11: 12.5V
Think the resistance to ground with the screen...
Resistance to ground at pin 1 is 1.23 with screen unplugged. 0 with screen plugged in (suggest short in screen?)
Continuity from pin 1 to D7701- Yes
F7700- good voltage to both sides
U7701:
Pin 5: 5.03V
Pin 18: 5.03V
Pin 17: 3.3V
Pin 11: 12.5V
Think the resistance to ground with the...
I will check. My other question is, is there a way to reliably test a screen backlight without getting a new one? I am out of known good, am at a down point in cash flow so can?t buy a known good and cant afford to take the hit of buying a new one if it?s indeed not the problem.
Have a late 13 3662 with no back light and MagSafe stays orange (no charge in battery) history is that water from a faucet dropped on Apple logo over some time. Display works fine, backlight does not. pin 1 at lcd bkltboost registered 0v. No real corrosion on board. Do you think it could simply...
So I have a problem with a 00165 no display/bklt
Indeed no display...
Indeed no bklt...
CPU is warm
The following will be obvious if there is fan and there is warmth on CPU
BUT:
PPBUS-Fine
PPBUS S5 HS Comp-8.57v
PPDCIN G3H-20.35v
PP3V42 G3H-3.42
pp5vs5-s5.13v
pp5v-s0-5.13
pp3v3 s5-s0: 3.3v...