I didn't mean to do it.Its just with stuff from Ebay & liquid damage I find missing parts all the time.Sometimes I even knock damaged stuff off cleaning.I just didn't realize there would be two different lay outs for the same part number mobo.Thats why I posted the pic & asked for help to identify the only two resistors that should be in that section.I put that board away till I get my answer.Thanks
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SMC Issue on MBP 13 - Hardware Troubleshooting Guide
- Thread starter Dadioh
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I didn't mean to do it.Its just with stuff from Ebay & liquid damage I find missing parts all the time.Sometimes I even knock damaged stuff off cleaning.I just didn't realize there would be two different lay outs for the same part number mobo.Thats why I posted the pic & asked for help to identify the only two resistors that should be in that section.I put that board away till I get my answer.Thanks
chaser/running light on battery button press - "Battery not present" and not charging
Issue here: Battery doesn't charge/"not present" and button test button gets a "running light" (chaser).
Can anyone give me the model name for the SMC chip? I'm ordering at a big distributor today, so I'd just like to get it as well just in case it turns out to be necessary to replace it.
I've got a 17-inch MBP Unibody A1297 (liquid spill, it wasn't me).
Thank in advance! I love these threads here!
Issue here: Battery doesn't charge/"not present" and button test button gets a "running light" (chaser).
Can anyone give me the model name for the SMC chip? I'm ordering at a big distributor today, so I'd just like to get it as well just in case it turns out to be necessary to replace it.
I've got a 17-inch MBP Unibody A1297 (liquid spill, it wasn't me).
Thank in advance! I love these threads here!
I believe you will NOT be able to order the SMC chip used in Apple logic boards directly from any distributors. It has custom firmware built-in, and tailored to Apple specification. If you look up the part number and then the component specs, it will give you generic info of the vendor's standard/equivalent part, but the specific one used by Apple is proprietary. Also as a guess, I would guess other components in the board will die first before the SMC chip when it comes to liquid spill.
EDIT: I look it up and the SMC is typically one of these H8S21xx series single chip 16-bit computer, made by Renessas. I don't know if these are actually proprietary, but the program running on it (BIOS) definitely is proprietary. The chip that is definitely unique is the 6258, made by Intersil, the battery logic and charging circuit controller
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Hello
I wonder if anyone knows what could be wrong with my macbook pro
I made a clip on youtube so you can see my problem
http://www.youtube.com/watch?v=M2Pg96FG-hs
As shown in the clip I have to use this brush to wipe on the magsafe board connectors, causing probably some short circuit or something, it works like this every time I have to charge it, or run the comp on magsafe power.
I wonder if anyone knows what could be wrong with my macbook pro
I made a clip on youtube so you can see my problem
http://www.youtube.com/watch?v=M2Pg96FG-hs
As shown in the clip I have to use this brush to wipe on the magsafe board connectors, causing probably some short circuit or something, it works like this every time I have to charge it, or run the comp on magsafe power.
My guess is that the magsafe plug is dirty and possibly one or more of the 5 pins are stucked. Just for experiment, when this condition occur, connect the magsafe plug the other way around (the cable towards you instead of away and see if the problem goes away.
To clean that plug, use the same brush and dip it in isopropyl alcohol and then brush the contacts in the plug. Once cleaned, the pins should be movable in and outslightly as they are spring loaded. WAIT for a few hours before trying to plug that back into the Mac. BTW, your Mac is NOT the problem and has no shorts.
i5 macbook pro water salvage
Hi, i have been reading through this thread and thought perhaps I could ask about my water damaged mac. I purchased a feb 2011 i5 2.3 a week or so ago via ebay and took it apart to clean it. After several cleans the logic board looks pretty good. But I have no good battery, the one that was in it was bloated and leaking and presumed dead. The magsafe was water damaged as well but it seems to be sending a charge as the dc in board is reading ~ 16.7V. Also several capacitors? show the same voltage when magsafe is plugged in. I also tested the what I assume to be the battery fuse near the caps with voltage and it reads 0.86 V or .5V. the cap below the fuse also reads 0.0 or .86v. Also the right three prongs on the battery connection show this similar voltage of 0.86V. I am not sure if that means anything given that the battery is not connected. Also I don't know where the GHot rail is to test it out. I did attempt to power it up but nothing happened. I tried the cntrl/shift/alt reset too with no response. My magsafe goes dimly lit green when plugged in and after about 5-10secs its starts flickering green/orange or just green (hard to tell).
Hi, i have been reading through this thread and thought perhaps I could ask about my water damaged mac. I purchased a feb 2011 i5 2.3 a week or so ago via ebay and took it apart to clean it. After several cleans the logic board looks pretty good. But I have no good battery, the one that was in it was bloated and leaking and presumed dead. The magsafe was water damaged as well but it seems to be sending a charge as the dc in board is reading ~ 16.7V. Also several capacitors? show the same voltage when magsafe is plugged in. I also tested the what I assume to be the battery fuse near the caps with voltage and it reads 0.86 V or .5V. the cap below the fuse also reads 0.0 or .86v. Also the right three prongs on the battery connection show this similar voltage of 0.86V. I am not sure if that means anything given that the battery is not connected. Also I don't know where the GHot rail is to test it out. I did attempt to power it up but nothing happened. I tried the cntrl/shift/alt reset too with no response. My magsafe goes dimly lit green when plugged in and after about 5-10secs its starts flickering green/orange or just green (hard to tell).
I took it back out to take a pic of the underside. This square box had a lot of rust on and coming off it prior to cleaning, It also happens to be directly under the little boxes from the other picture, (they are labeled 22 1E12 ). The boxes that seem to be closer to the dcin from it are 16.5V, and the one below the white box (fuse?) is .3V . The white box is also .5V or less.
Could the box underneath be causing the voltage to not be delivered?
Thanks for any input.
So, I've got another puzzle for the thread. I've got a 2009 13" MBP (2.26 Core 2 Duo) that took a pretty serious beating. Shattered screen, significant damage to the unibody, etc.. The guy I got it from said there was no liquid damage, and I didn't see any signs of it on the board. I pulled the logic board, and installed it in a 2010 MBP that had a bad board.
The computer will take power (Magsafe goes green then orange), charge the battery, and when the power button is pressed will spin up the fan and HD with the sleep light on solid. It stays powered for about 5 seconds, then shuts down briefly and restarts on it's own but stays in the state of HD spinning, fan on, CD drive running (with my Snow Leopard DVD stuck in it) and sleep light solid on but no power to the display or USB bus. If i try an SMC reset I get the expected behavior of the magsafe briefly changing state from orange to green and back again, but this has no effect on the attempted boot process.
I'm at a loss as far as anything else I can try, so any advice is welcome. Thanks in advance!
The computer will take power (Magsafe goes green then orange), charge the battery, and when the power button is pressed will spin up the fan and HD with the sleep light on solid. It stays powered for about 5 seconds, then shuts down briefly and restarts on it's own but stays in the state of HD spinning, fan on, CD drive running (with my Snow Leopard DVD stuck in it) and sleep light solid on but no power to the display or USB bus. If i try an SMC reset I get the expected behavior of the magsafe briefly changing state from orange to green and back again, but this has no effect on the attempted boot process.
I'm at a loss as far as anything else I can try, so any advice is welcome. Thanks in advance!
Mid 2010 2.66 unibody MacBook pro
@dadioh and @cmdrdata and everyone else
Hey guys great thread, thank you!
I've read through this forum twice now, so forgive me if I missed this info.
Problem: 13" MacBook pro mid 2010
2.66 ghz. Won't charge or read battery. But if I unplug the MagSafe it will run for a few seconds before it shuts off. So I think the battery has a little bit of charge, and I think it will run off of battery? But it just won't charge it.
I've checked the main fuse by the battery and get no resistance, so I know that it is good. I've located the charging controller, HOWEVER It is a different part than the one I've seen posted here. It is labeled 6259A (instead of the 6258 that's on the 2.4's and other models)
I've googled and searched all over but can't find the datasheet for it. If any one has the schematic for the 2.66 or that datasheet for the is6259a, could you help me out?
Or does anyone know what to check for on the pins (resistance or voltage)?
I have some very fine tip probes and a microscope, as well as access to a bunch of spare parts, BGA machine, metcal soldering iron, and I'm very comfortable and experience with replacing chips and parts. I'm just stuck and dont know what to do now.
Edit. I've checked the voltage at the main fuse by the battery connectors. I get 0 voltage, but when I check resistance I get no resistance.
edit. i've found the schematic for my computer. but i'm having trouble finding parts on the board, and reading the schematics... if anyone has any tips/help, or links to good tutorials, i would much appreciate it.
@dadioh and @cmdrdata and everyone else
Hey guys great thread, thank you!
I've read through this forum twice now, so forgive me if I missed this info.
Problem: 13" MacBook pro mid 2010
2.66 ghz. Won't charge or read battery. But if I unplug the MagSafe it will run for a few seconds before it shuts off. So I think the battery has a little bit of charge, and I think it will run off of battery? But it just won't charge it.
I've checked the main fuse by the battery and get no resistance, so I know that it is good. I've located the charging controller, HOWEVER It is a different part than the one I've seen posted here. It is labeled 6259A (instead of the 6258 that's on the 2.4's and other models)
I've googled and searched all over but can't find the datasheet for it. If any one has the schematic for the 2.66 or that datasheet for the is6259a, could you help me out?
Or does anyone know what to check for on the pins (resistance or voltage)?
I have some very fine tip probes and a microscope, as well as access to a bunch of spare parts, BGA machine, metcal soldering iron, and I'm very comfortable and experience with replacing chips and parts. I'm just stuck and dont know what to do now.
Edit. I've checked the voltage at the main fuse by the battery connectors. I get 0 voltage, but when I check resistance I get no resistance.
edit. i've found the schematic for my computer. but i'm having trouble finding parts on the board, and reading the schematics... if anyone has any tips/help, or links to good tutorials, i would much appreciate it.
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I have not heard of anyone having a bad/damaged SMC in this forum so far, so my guess is that your ISL6259A its probably OK too. Most likely your problem is due to a bad discrete component or FET that prevents magsafe power from reaching the charging and system power circuitry.
Things to check: there is a fuse that protect system from magsafe over current draw (on the underside near where the DCIN board connects to the logic board. You should see 16-18 volt at the fuse. If the magsafe connector is not showing any green or orange LED, the I2C communication is malfunctioning. Do you have 3.42v at the G3HOT location with magsafe connected? If not, then that has to be fixed first. The SMC get its power from G3HOT. The system attempting to power on is good. It means that you just have a low charge battery. Get that charged elsewhere first. The fuse you mentioned is the junction where magsafe power and battery power meets (technically), so the circuit beyond that fuse is probably OK.
i think my SMC is ok, but my concern is for the Charging controller. i'm getting full power. i'm actually using the MB now. The Magsafe Adapter light is green. it will turn orange for a split second when i first turn it on, but then go to green.
wouldn't the whole board be dead if that fuse by the magsafe plugin was bad?
here is the schematic for my board.
on page 58 is the charging controller. i've looked up the connected FETs on that page. But i'm still not certain what measurements i should be getting on each pin. could you help me there?
It is possible one or both the FETs are blown. With power off check resistance from gate to source, gate to drain, and drain to source. You should be getting kohms or mohms. If the FET is blown you will see ohms. It is also possible that the controller itself goes at the same time as the FET. When you remove the FET check the resistance again to make sure the controller is not the issue. Otherwise you replace the FET and it just blows again.
Ok I have revived another one. This is now number 3. The funny thing is everything is running super slow. I thought I had cleaned everything any advise anyone can bring would be great! If it goes into sleep mode and I bring the computer back up it works great for around 15 seconds, then it slows back down. Not sure what to call this one. Anyone had this issue? Thanks.
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So it boots and all the hardware passes diagnostics but the system is unresponsive? Maybe try running apple hardware test found on the installation. DVD. Also, what disk image are you using? Try repair disk and repair permissions. Might be a sw issue.
Finally, did you clear the smc and reset pram?
Yes I did clear smc and pram. But I failed to give all info. The fan is running hard. It starts on startup. Everything functions well but it's just slow.So fans go off in sleep mode. When you bring the machine out of it it works as it should for 10-15 seconds then the fans get going and it slows.
If it was just system sluggishness I would suggest that there is a process running that is hogging resources but the fact that the fans change speed suggests that it has something to do with the SMC. The SMC controls fan speeds as far as I know.
If you monitor the system resources do you see a process that is using up many CPU cycles? Try installing iStat Menus and then you will be able to see CPU and disk usage to see if there is something amiss.
With power off check the impedance across Q7030 and Q7035. Check D-S, G-S, D-G on both FET's and see if there is a low impedance indicating a blown FET.
Another quick check, if the impedance Q7035 D-S is low is to lift off the fuse and see if the low impedance is after the fuse or before the fuse. That wilt ell you if it is the charger circuit or if the problem is further down stream on one of the board's power supplies.
Ok I've replaced the 2 mosfets directly on the other side of the charging controller (the mosfets are labeled q7030 and q7035 on the schematics)
I also replaced the charging controller (isl6259a)
But still no battery.
I tested a good working battery and now, instead of the mbp staying on for a second, it goes completely dead instantly after disconnecting the MagSafe.
Also the system is running sluggish.
Any ideas now?
(also when I took off the mosfets and tested there resistance again, on of them gave me high resistance, and the other showed that it was blown... I haven't retested the new ones on te board yet, but I will.
BUT BESIDES testing those mosfets, do you have any other things I should test?)
When you remove the FETs check the resistance on the circuit board with them removed to make sure the issue is not elsewhere in the circuit.
Hey I'm having this same issue... I also tried resetting pram and resetting the smc... But I just noticed that my computer is indexing the hard drive again... Which is weird because I've been using the computer and it's already indexed it before... So I guess the smc or pram reset, also makes the computer re-index the hard drive. Is that what is causing your issue too?
Is it possible it is overheating? Try installing iStat menus and see what temperature your components are running at.
Idk about overheating, it's running at about 100 degrees... Which istat doesn't say ferenheit or celcius, and I'm away from computer now, do idk is that high?
But system monitor says my CPUs are 98% used, but I don't see anything hogging any resources...
I think I found the another reason my battery isn't charging now... Instead of taking off the 2 mosfets I replaced (q7030 and q7035)
I decided to check voltage at battery fuse, and I'm
Getting 12V now! Next I checked q7055 (the si7139dp) and I'm getting 12v at source and gate, but less than 1V at
Drain..
The data sheet and schematic says I'm supposed to be getting 20V so am I safe to assume its bad?
Or would there be some other feedback loop or some other line from the charging controller not allowing that to boost the 20v?
The charging controller's lines loop back around on itself and is confusing to an amateur like myself..
In iStat go to "edit preferences" and then select "sensors". You can select Celsius or Fahrenheit. If that is 100C then that is far too hot and you are probably getting thermal throttling on the CPU (Intel protection for the CPU). I would remove the heatsink, clean off the existing TIM (Thermal Interface Material) with Ispropyl Alcohol and then reapply a good quality TIM (I use MX-2).
To find out why your CPU is at 98% usage open activity monitor (under applications -> utilities) and sort the list by %CPU usage. Something appears to be running that shouldn't be.
If Vgs is 0V (You say both G and S are 12V) then the FET is OFF and you are seeing the voltage from your battery alone. So basically the battery is dead. The 12V you are measuring is the PPBUS_G3H voltage (about 12.5V) that runs the system.
When the system is running is it detecting the battery?
I've reapplied heat sink paste and cleaned the heatsink vents...
Activity show thats that only the normal stuff is running.. The biggest resource hog is the usually the activity monitor itself... And it usually only takes up about 3-5% and then there are a few other things that take up about 3% or less. So I'm thinking there could be a short somewhere? Bc I've turned off the indexing of the hard drive. Could a short cause the CPUs being used so much?
The gpu says its only being used about %40-50
And on the MOSFET, yes I'm
Actually getting about 12.4-12.5 volts at gate and the same at source. But 0v at drain.
I tried a known good battery, but same problem..
So does the drain on that MOSFET charge the battery? Or does it sense the voltage and tell the charging controller to start charging?
Does "off" mean its bad?
What should I check next?
Or should I replace that MOSFET and then check?
Update: I got it running fine again. (minus battery charging issue) I just cleaned the board really well with IPA.. I guess some flux or leaked component was causing some short or resistance?
But it's still not actually perfect... If I disconnect the MagSafe, the computer will instantly shut off, then I'll restart it and the CPUs will be running slow, with about 90% of its resources being used. Still no obvious perpetrator causing this. Sometimes a smc reset or a pram reset (or some combination of the two) will fix it for a little bit, but after a few minutes of the computer running, it'll go back to running slow.... Any one have any ideas?
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