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Sorry I wrote that wrong. I edited the post. Fan spins anytime I plug MagSafe in. Still having issue of no video, no chime. Using a 45w original Apple charger.
Well I got the board to power up. PM_SLP_S4_L was 0v which led me to u6100. For whatever reason two resistors near u6100 were missing. All traces are good. Now the issue I'm having is no video. No chime.
Finally getting around to triaging some of the boards I have laying around that won't power up.
I have a 820-00164 board that shows the green to orange on magsafe charger. Not really sure where to start with no power issues. I have the boardview up.
PP3V42_G3H - 3.41
PPBUS_G3H - 8.57...
I double checked. This thing seems to act differently Everytime power is applied as far as u7100 goes
Pin 9 - 3.4v
Pin 15 - .07v
C7125 looks good
Q7155 pin 1 is 1.58v
R7113 looks good
Well I guess I am going to try reflowing the chip. After cleaning it good with alcohol I am now successfully charging the battery BUT only charging at 1.84 watts. I assume there is additional corrosion that I cannot see.
As far as history goes not much other than being informed of the charging issue. Board looks clean. Water indicators all white.
On U7100 it appears there may be some corrosion between pins 8 and 9. Anyways here are the read outs.
U7100
Pin 9 - .03v
Pin 15 - 8.56v
Pin 26 - 14.59v
7180 -...
As far as history goes not much other than being informed of the charging issue. Board looks clean. Water indicators all white.
On U7100 it appears there may be some corrosion between pins 8 and 9. Anyways here are the read outs.
U7100
Pin 9 - .03v
Pin 15 - 8.56v
Pin 26 - 14.59v
7180 -...