How did you fix the no power no charge? There is a couple of us with this issue and we are trying to resolve.
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SMC Issue on MBP 13 - Hardware Troubleshooting Guide
- Thread starter Dadioh
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How did you fix the no power no charge? There is a couple of us with this issue and we are trying to resolve.
The right side of R7085 will only go to 6-7v if R7086 is somewhere near 332KOhm and U7000-1 is able to go to logic 0, aka somewhere near 0v. When that happened, R7085 and R7086 then becomes voltage divider, where the junction voltage is at the right voltage to turn Q7085 on to pass the magsafe power to the charger circuitry. If U7000 is not able to drive pin 1 to 0v, then you'll read around 16v there too.
First thing to fix was the power. The FET by the battery connector was bad after taking some measurements especially D-S. After replacing it, I was getting 12V on Pin 1. Also, I replaced 1uF capacitor next to it. After that the power was back. Now, after connecting megsafe I was getting solid green. My charging issue was easy as I had 'visual hint' the U7000 was burned. Also, one of the 100k resistors on the bottom of the LB was reading 45k. After replacing both the LB started to charge.
It just happens I always get stuck with this issue now - no boot. This LB has pretty much the same problem as the one that I posted 2 months ago. I believe cmdrdata and others were trying to help.
Back than I replaced the CPU Voltage Regular but that didn't help. This chip outputs two very important signals:
PPVCORE_S0_CPU (1.1V)
CPUIMVP_PGOOD (3.3V)
This FET Q7510 on the other hand outputs two very important signals that feed directly to U7400. So like I stated before these two chips output and input signals from each other. I still can't figure out which other signal, resistor or capacitor impacts it so my PPVCORE_S0_CPU and CPUIMVP_PGOOD have both 0V. Need help friends...
CPUIMVP_ISNS1_P
CPUIMVP_ISNS2_P
Before you started replacing the FET etc., did you have no G3HOT?First thing to fix was the power. The FET by the battery connector was bad after taking some measurements especially D-S. After replacing it, I was getting 12V on Pin 1. Also, I replaced 1uF capacitor next to it. After that the power was back. Now, after connecting megsafe I was getting solid green. My charging issue was easy as I had 'visual hint' the U7000 was burned. Also, one of the 100k resistors on the bottom of the LB was reading 45k. After replacing both the LB started to charge.
It just happens I always get stuck with this issue now - no boot. This LB has pretty much the same problem as the one that I posted 2 months ago. I believe cmdrdata and others were trying to help.
Back than I replaced the CPU Voltage Regular but that didn't help. This chip outputs two very important signals:
PPVCORE_S0_CPU (1.1V)
CPUIMVP_PGOOD (3.3V)
This FET Q7510 on the other hand outputs two very important signals that feed directly to U7400. So like I stated before these two chips output and input signals from each other. I still can't figure out which other signal, resistor or capacitor impacts it so my PPVCORE_S0_CPU and CPUIMVP_PGOOD have both 0V. Need help friends...
CPUIMVP_ISNS1_P
CPUIMVP_ISNS2_P
15" mid 2010 dim charger, won't boot
Hi,
I my battery was fluctuating from Normal to Service battery and I decided to open it up and inspect.
I didn't see anything obviously wrong so I put it back together but now it won't boot at all.
The charger just shows a dim green light with either the battery plugged or not. The battery indicator lights don't light at all.
I can measure 17V on the dc in board but I can't seem to be able to locate the g3hot or the battery fuse on my mid 2010 15".
I also tried to measure the voltage on the battery pins (on the solder points on the logic board) but I got a spark from the pin 1 to the metal top of the battery connector. I think my probes maybe are a bit too large so I'm afraid of using them and getting another spark and fry something.
I've also tried the SMC bypass of the fist post to no avail.
Any ideas?
Hi,
I my battery was fluctuating from Normal to Service battery and I decided to open it up and inspect.
I didn't see anything obviously wrong so I put it back together but now it won't boot at all.
The charger just shows a dim green light with either the battery plugged or not. The battery indicator lights don't light at all.
I can measure 17V on the dc in board but I can't seem to be able to locate the g3hot or the battery fuse on my mid 2010 15".
I also tried to measure the voltage on the battery pins (on the solder points on the logic board) but I got a spark from the pin 1 to the metal top of the battery connector. I think my probes maybe are a bit too large so I'm afraid of using them and getting another spark and fry something.
I've also tried the SMC bypass of the fist post to no avail.
Any ideas?
Yes. After quick cleanup I restored my G3HOT. Someone must spill a lot of sticky wine.
The readings I am getting for both resistors seem correct. R7086 341k R7085 470k Does this mean there is a problem with U7000 itself?
I managed to get a reading on the battery pins: I get 11.9V on between pins 1 and 9 and 3.4v between pins 5 and 9.
What should I do next? Any help is most welcome
Ok
My dc in pins read 0 17 0 17 0 so something is definitely off. I should have current on the center pin.
On the pads near the keyboard connector I get 3.4v is this the g3hot?
The battery lights doesn't light and the Mac does not power on either with just the battery nor with the MagSafe.
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Hi everyone ,
i've a little problem with my macbook unibody A1342 - MB820-2567A.
My mac only boot on ac/dc ,it recognize the battery and charge it to 100%.
The magsafe board turn from green to orange .Stay on green after full charge .
It run correctly (os/fan/sound/video) but the time setting always reset after i remove the magsafe.
When i unplugged the magsafe ,it shutdown suddenly .
When i don't use it ,the battery drain like it's in standby ;in 9 days ,the battery down from 99% to 80% .
All test i've tried:
-new magsafe + new magsafe board
-new battery
-fresh install on a ssd now
I've checked some voltage :
power pad on board with AC : 3,41v / battery only : 1,21v
batt pos F = 12,45v /12,22V
sys dectect = 3,38v/1,19v
i've a little problem with my macbook unibody A1342 - MB820-2567A.
My mac only boot on ac/dc ,it recognize the battery and charge it to 100%.
The magsafe board turn from green to orange .Stay on green after full charge .
It run correctly (os/fan/sound/video) but the time setting always reset after i remove the magsafe.
When i unplugged the magsafe ,it shutdown suddenly .
When i don't use it ,the battery drain like it's in standby ;in 9 days ,the battery down from 99% to 80% .
All test i've tried:
-new magsafe + new magsafe board
-new battery
-fresh install on a ssd now
I've checked some voltage :
power pad on board with AC : 3,41v / battery only : 1,21v
batt pos F = 12,45v /12,22V
sys dectect = 3,38v/1,19v
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Before determining U7000 as bad, ensure that the junction of R7010 (30K) and R7011 (9.3K) produced 3.7v when magsafe is plugged in. If it is not, then U7000-1 will not go to 0v to enable the power FET that is blocking 16v from going to the charger circuitry. You then need to find out why it not is 3.7v, a simple resistor divider circuitry.
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You've got a bad G3HOT circuitry. The 1.21v reading with battery indicated that G3HOT from battery power is malfunctioning. When magsafe is connected, G3HOT is being maintained, thus the system will work OK, but as soon as you remove the magsafe, the G3HOT drops, thus the system have no way of knowing that the battery is available.
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So do you have ideas to how restore my PPVCORE_S0_CPU when my CPUIMVP_PGOOD is logic 0?
All I was able to figure out is that PPVCORE_S0_CPU is generated from Q7510 power FET that is gated by U7400 which in turn CPUIMVP_PGOOD is logic 0
Also, once PPVCORE_S0_CPU is logic 1 it is passed to CPU and SMC
I'm getting (30K) on R7010 and (9.6K) on R7011 ....5.2V. (seems a bit high?) on the left of R7011 and into pin 3.I already replace U7000 I am wondering if I fried it or just haven't got all the pins soldered 100%. What do you think?
The R7011 being 9.6K Ohm is a bit high and thus the resultant 5.2v. This 5.2v would be higher than the U7000 built-in 5v regulator that power the internal chip functions as well as the internal comparator that drives pin 14 and pin 1 That is why your pin 14 (ACOK) also reads 0v. If I were you, i'd replace R7011 so the voltage will be between 3-4v. After pin 3 corrected, pin 14 should be logic high (3-4v) and that in turn will cause pin 1 to go low to near 0v.
Note: actually calculating R7011 / (R7010+R7011) x 15.6v = 3.8v. To get 5.2v R7011 must be around 15K, so perhaps the ground end of this resistor has a bad solder joint.
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I just replaced R7011 to be sure. I also tested the pack of new R7011 resistors and they all read the same 9.6k. Do you think I may have fried the new U7000? I guess that still wouldn't explain the 5.2v getting passed R7011.
I feel like this one is so close to being fixed but I'm not sure what to do next. :/
Temporarily double up R7011 (parallel) and see if that changed U7000-1 and 14. Doing this reduces R7011 by half and thus should lower your 5.2v to below 5v.
IM SUCH AN IDIOT! I WAS READING 5.2MV NOT 5.2V.
So let me start again (sorry)
Right of R7010 is bouncing any where from 16.77V - 17.20V
Left of R7011 is 5.2MV and so is pin 3 of U7000.
I am getting (30K) on R7010 and (9.6K) on R7011.
Does this give you a better idea of what may be going on?
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16v ---/\/\/\/------+------/\/\/\/\-------GND
30K 9.6K
^
+----This should be 3-4v period. Any other voltage is a grounding problem or bad resistor or bad solder joint. Oh, maybe U7000-3 is shorted to ground.
MacBook Pro 2010 Dim Green Charger Light won't boot
MACBOOK PRO 2010 DIM GREEN Charger Light won't boot up.
Boots only on SMC Bypass mode
doesn't respond to normal boot
Battery doesn't charge
Changed DC-In Board but still the problem doesn't solve
Could someone please help in diagnosis
Update : After 3 days long charging, the battery indicator blinks all leds for 5 times
and when i try to switch on the macbook using powerbutton , the power button led indicator flashes once and it doesn't start . Still trying to figure out the issue. Please help
MACBOOK PRO 2010 DIM GREEN Charger Light won't boot up.
Boots only on SMC Bypass mode
doesn't respond to normal boot
Battery doesn't charge
Changed DC-In Board but still the problem doesn't solve
Could someone please help in diagnosis
Update : After 3 days long charging, the battery indicator blinks all leds for 5 times
and when i try to switch on the macbook using powerbutton , the power button led indicator flashes once and it doesn't start . Still trying to figure out the issue. Please help
So the problem has to be between R7010 and U7000 correct?
Maybe C7011 cap is bad this is also on pin 1. Would that cause this issue?
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i have almost identical readings as you do.
4.5mv and 16.5v
My C7011 reads 4.5mv as well. Curious to see how this ends up. I have also replaced the U7000. Wondering if We have soldering issues.
My pin 3 has the 4.5mv so it seems to me that the problem has to be somewhere else since it seems to be passing the same voltage through the resistors
Have you tested C7011? I believe my multimeter can test caps but everything is at my work right now.
Before I replaced U7000 I had 0v on pin 1 so it def could be a bad solder joint. but I also blew off quite a few resitors and caps because my hot air pressure was a bit to high that I had to solder back on so it could be that too.