00165 no fan spin

2informaticos

Administrator
Staff member
No pulse at 5V coil when you connect the charger?

Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L.
 
No pulse at 5V coil when you connect the charger? - i get a pulse when first pluging in 5v. after .01v

Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L. - yes drop is in voltage
 

2informaticos

Administrator
Staff member
Triggering SMC_ONOFF_L various times, is easy to catch the pulse, if exists.
In such case, all S3 and S0 voltages must pulse too.
Check for pulse at all big coils, including VCORE.
Also check at pins 7 & 3 of U1950.
Try to start in SMC bypass mode too.
 
I tired starting in smc bypass and i got fanspin. but then almost right after something started smoking. i can't find what burned on the board.
 

2informaticos

Administrator
Staff member
Some SMC sensor stops it to start in normal mode.
Now check what got burnt.
Check all secondary power supplies, and pages 57/58.
 
l7320 - 1.8 pulse
l7310- 1.8 pulse
l7630 - 1v pulse
l7430 - 1.2v pulse
l7560 - 3.3v stable
l7130 - 8.6v stable
l3095 - 0v no pulse
l7701 - 0v no pulse

i'm getting a pulse fan spin on smc bypass now
 

2informaticos

Administrator
Staff member
Did you check for short after Power MOSFETs?
Output voltages pulsing there too?

Try known good BIOS, just in case.
 
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