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A1466 820-00165-A it doesn't turn on
- Thread starter Paky46
- Start date
First of all, welcome to the forum!
Post PPBUS_G3H and 3V42_G3H voltage.
If none present, check DCIN_G3H voltage at least.
Did you try with fake charger?
Post PPBUS_G3H and 3V42_G3H voltage.
If none present, check DCIN_G3H voltage at least.
Did you try with fake charger?
Do you get both 3V3_S5/SUS?
OK, that means 3V3_S5 is also good.
Trigger SMC_ONOFF_L and check for drop pulse (3-0-3) at PM_PWRBTN_L (at same time).
If detected, check for pulse at PM_SLP_S4_L too.
Use R5115/16 pads, instead of power button.
Trigger SMC_ONOFF_L and check for drop pulse (3-0-3) at PM_PWRBTN_L (at same time).
If detected, check for pulse at PM_SLP_S4_L too.
Use R5115/16 pads, instead of power button.
HOW TO collection
I hope this "How to" collection will help our members. I will possibly modify this post in time, if updates available. Trigger SMC_ONOFF_L (PMU_ONOFF_L): It reffers to simulate power button function, when the keyboard is not connected. We need to do this when we work with the board...
boards.rossmanngroup.com
I'm not sure what you've mean.
You've asked to use these pads instead of power button, not to check voltage (nor diode mode) there.
More strange to get different readings.
Are not pads 1 of R5115/16 connected together (SMC_ONOFF_L)?
So, use these pads to simulate power button amd check reaction on the above mentioned signals.
OK, if catch drop pulse at PM_PWRBTN_L.
Now remains to check for pulse at PM_SLP_S4_L; at sime time when triggering SMC_ONOFF_L.
BTW, I never mentioned R5516...
You've asked to use these pads instead of power button, not to check voltage (nor diode mode) there.
More strange to get different readings.
Are not pads 1 of R5115/16 connected together (SMC_ONOFF_L)?
So, use these pads to simulate power button amd check reaction on the above mentioned signals.
OK, if catch drop pulse at PM_PWRBTN_L.
Now remains to check for pulse at PM_SLP_S4_L; at sime time when triggering SMC_ONOFF_L.
BTW, I never mentioned R5516...
"i made this bridge"
Pay atention when you read.
"Is very easy to solder a tiny wire on the pad corresponding to the signal; just touch any metal plate with it, when you want to simulate power button.
Just a temporar contact, of course."
Pay atention when you read.
"Is very easy to solder a tiny wire on the pad corresponding to the signal; just touch any metal plate with it, when you want to simulate power button.
Just a temporar contact, of course."
Do you mean PM_SLP_S4_L is always 3V, even before triggering SMC_ONOFF_L?
Then you don't need to simulate power button.
Just check voltage on all big coils.
Also check ALL_SYS_PWRGD level.
Then you don't need to simulate power button.
Just check voltage on all big coils.
Also check ALL_SYS_PWRGD level.
Didn't find more coils on the board?
Check them for pulse at least; if no stable voltage.
Check them for pulse at least; if no stable voltage.
"L7560 3"
I'm pretty sure is not the exact value.
You've posted another values with decimals, why not for 3V3 (when its name is very clear)???
So you get even PCH and RAM voltages.
ALL_SYS_PWRGD should be high then.
Remove Q8150 and check it again.
"POSSIBLE PP3V3_S4SW_SNS IS 0.050"
Check first diode mode to ground there.
If good, check R8050.
Post U8050 voltages.
I'm pretty sure is not the exact value.
You've posted another values with decimals, why not for 3V3 (when its name is very clear)???
So you get even PCH and RAM voltages.
ALL_SYS_PWRGD should be high then.
Remove Q8150 and check it again.
"POSSIBLE PP3V3_S4SW_SNS IS 0.050"
Check first diode mode to ground there.
If good, check R8050.
Post U8050 voltages.