SMC Issue on MBP 13 - Hardware Troubleshooting Guide

[l.a.rossmann]

I love ASD. Nothing like it.

Run the ASD GPU test one hundred & seventeen times in a loop and it will pass; but same board freezes five minutes into furmark.

What does one have to do short of remove the GPU for it to fail ASD?

Use it for error codes and nothing else. Don't use it to judge whether a machine is ready to be sold or given back to a customer.

 

[chigwelldave]

i managed to find em alright on a few dodgy websites, got about 30gb worth of different ASD DMG's.
Only problem is i cant load them on my dodgy boards due to what i believe is MCP failure (hangs loading video controller)

But certainly if you can Run ASD before going any further!

Replacing ISL6259 may resolve the problem, it could also be a problem with the smc, witch will be a pain to deal with.

Do you still want to see where the chip is on the baord view?

Have you tried the EFI version of ASD? It is a much less demanding environment and may boot where the OSX version will not. I can run it on a 'Radeongate' 2011 where the OSX version freezes.

Regards,

Chigwelldave.

 

[South657]

u7000

Hi all I have a K90i I am getting 5.5v - 14.4v at F7040? have changed u7000 still the same just go up and down all the time unstable.
I get 16.4v pin 5 q7030 stable. is this a case Q7030 Q7035 not working? I have not seen any thing on thred on this problem going to 14.4v?
Any help would be welcome.

Thanks

South657

 

[ZZZAC]

Ive been out of the business for 9 years, I do hold ACSP, ACPT, ACDT but back in 2001ish so I'm really rusty. I will keep looking for the 3s132 version, but its hard to find. It may have to wait to finish the ACMT's to get the diags from Apple.
Thanks

I have just come across exactly the same board model. with exactly the same problem and exactly the same resistance. We can nail this together im sure! 😀

 

[Sheridansystems]

I have just come across exactly the same board model. with exactly the same problem and exactly the same resistance. We can nail this together im sure! 😀

Irony, I love it! I sure we will get them going!. I'm still fumbling thru getting Landrex running, but I could certainly use the location to ISL6259, what's the difficultly in replacing the SMC?

 

[chigwelldave]

Irony, I love it! I sure we will get them going!. I'm still fumbling thru getting Landrex running, but I could certainly use the location to ISL6259, what's the difficultly in replacing the SMC?

Hi Sheridansystems,

Boardview for U7000, ISL6259A below. The SMC is in a BGA package, not very easy to replace.

Regards,

Chigwelldave

 

[ZZZAC]

Irony, I love it! I sure we will get them going!. I'm still fumbling thru getting Landrex running, but I could certainly use the location to ISL6259, what's the difficultly in replacing the SMC?

On this board it's isl6258. I need to prone the area of isl, I may try another replacement but I fear the problem isn't the charging ic (had no power before I got the board and changed the ic) but I'll have a proper look into it pver the next couple of days. Funnily enough the resistor you measured at 1.5k measures the same on mine.

I have 3.4v one side and nothing the other so it's being pulled down... Need to look At the schematic but I have ads and a couple of new smc chips....
I'll keep you updated 🙂

 

[Sheridansystems]

On this board it's isl6258. I need to prone the area of isl, I may try another replacement but I fear the problem isn't the charging ic (had no power before I got the board and changed the ic) but I'll have a proper look into it pver the next couple of days. Funnily enough the resistor you measured at 1.5k measures the same on mine.

I have 3.4v one side and nothing the other so it's being pulled down... Need to look At the schematic but I have ads and a couple of new smc chips....
I'll keep you updated 🙂

I will be changing the charging chip today, just to be sure. I use a dark IR rework station, using a BGA profile, what do you use to swap a chip of that level? I will post my test findings and any results.

 

[ZZZAC]

I will be changing the charging chip today, just to be sure. I use a dark IR rework station, using a BGA profile, what do you use to swap a chip of that level? I will post my test findings and any results.

I use an Atten 858D heatgun with a Puhui t8280 prehaeter.
I find it is almost impossible to change these chips without first using a fibre pen to clean the pads on the IC and then tinning the pads on the IC. Without using an abrasive on the padds solder simply doesnt seem to stick.
Previously had mixed results when changing these but now ive got my method dialed and get it right every time. Lots of pressure on the top of the chip whilst heating it a second time will ensure there are no solder shorts under the chip.


Please keep me updated on if it resolves your problem! 🙂

 

[Astroboy907]

I've got a Mid 2010 MBP 13" (board 820-2879-B) with a seemingly dead SMC (no SMC lights whatsoever short of a small blink when first plugged in. Likely a cap filling somewhere...). I'm thinking I've got a dead U4900 SMC chip because I get 3.4 volts on G3hot and C4902, but no SMC response.
Funny thing is, it worked up until I put the board through my ultrasonic cleaner... 🙄

Would the chip have gone bad or is it possible the ultrasonic knocked things around and the chip could just be reflowed? I tried heating it at 320*C with a hot air station but that didn't fix anything. Not sure if I got full reflow though.

 

[ZZZAC]

I've got a Mid 2010 MBP 13" (board 820-2879-B) with a seemingly dead SMC (no SMC lights whatsoever short of a small blink when first plugged in. Likely a cap filling somewhere...). I'm thinking I've got a dead U4900 SMC chip because I get 3.4 volts on G3hot and C4902, but no SMC response.
Funny thing is, it worked up until I put the board through my ultrasonic cleaner... 🙄

Would the chip have gone bad or is it possible the ultrasonic knocked things around and the chip could just be reflowed? I tried heating it at 320*C with a hot air station but that didn't fix anything. Not sure if I got full reflow though.

im assuming you get 12v?
Do you get 3.1V on pin 14 of U7000?
I am very unsure your SMC would die after a clean, seems a bit strange...

could a corroded component have come off in the UC? gota be a better explanation
Does it boot in SMC bypass atall?

 

[Astroboy907]

I'll check U7000 in a little. The only corroded component I'm really worried about is the inrush limiter (large component to the right of the LDVS connector), the pads started to corrode but there's still solder holding it on.

Didn't see anything in the UC when I ran it but there are 0204s everywhere on the board, hard to see. Either way it was a way back and the water has been cleaned out.

Boots in SMC bypass fine.

 

[AliveAndKicking]

Hi all
I have a mbp 2009 that wont boot. I opened it up and it seems that when I power on the laptop the sleep(white light) turns on and so do the internal peripherals such as the hd, fan turn on but soon after they all turn off as if the laptop powered off or something. The weird part is that as soon as everything powers off the laptop restarts no boot but this time the fan and sleep light remains on. If i remove the hd and power on the laptop, the sleep white light doesnt turn on but the fans still does.

The ram chips work, the harddrive works. I have tried a PRAM reset when it does boot and it actuay messes up my laptop and gives me the issue at hand. Not just PRAM almost any boot commands will do this, even booting from a disk will do this. This issue comes up frequently and the man cause is when the laptop goes into sleepmode. Its as if got stuck in deep sleep. So, I changed the settings to never sleep and I havent used a command option as a remedy.

I manually put my laptop to sleep this morning by closing the laptop accidentally and the issue happened. An hour later of trying I pressed power and the increase brightness button and it awoke. Im sure that was pure coincidence.I later then powered the computer off and now a couple of hours later im having the issue again except this time the laptop was never asleep.

Booting without the ram chips isint giving me the beeping error which I come to like because anytime I hear a beep that is a good thing because the laptop is telling you it has an issue. And everytme i reinstall the ram chips after hearing beeps the laptop turns on normally. Im not hearing any beeps

The battery charges. When I do an SMC reset the amber light turns green for a few seconds then it goes back amber but the issues still persists.

you guys might know what the issue is? feel like flinging my laptop off a bridge.

Best luck and thanks.

 

[Astroboy907]

im assuming you get 12v?
Do you get 3.1V on pin 14 of U7000?
I am very unsure your SMC would die after a clean, seems a bit strange...

could a corroded component have come off in the UC? gota be a better explanation
Does it boot in SMC bypass atall?

12v? Where? I was getting 3.4v on both G3hot and C4902. Yikes!

I get 2.01v on pin 14, and after I think I trigger G3hot it goes to 1.75v.

 

[ZZZAC]

Hi all
I have a mbp 2009 that wont boot. I opened it up and it seems that when I power on the laptop the sleep(white light) turns on and so do the internal peripherals such as the hd, fan turn on but soon after they all turn off as if the laptop powered off or something. The weird part is that as soon as everything powers off the laptop restarts no boot but this time the fan and sleep light remains on. If i remove the hd and power on the laptop, the sleep white light doesnt turn on but the fans still does.

The ram chips work, the harddrive works. I have tried a PRAM reset when it does boot and it actuay messes up my laptop and gives me the issue at hand. Not just PRAM almost any boot commands will do this, even booting from a disk will do this. This issue comes up frequently and the man cause is when the laptop goes into sleepmode. Its as if got stuck in deep sleep. So, I changed the settings to never sleep and I havent used a command option as a remedy.

I manually put my laptop to sleep this morning by closing the laptop accidentally and the issue happened. An hour later of trying I pressed power and the increase brightness button and it awoke. Im sure that was pure coincidence.I later then powered the computer off and now a couple of hours later im having the issue again except this time the laptop was never asleep.

Booting without the ram chips isint giving me the beeping error which I come to like because anytime I hear a beep that is a good thing because the laptop is telling you it has an issue. And everytme i reinstall the ram chips after hearing beeps the laptop turns on normally. Im not hearing any beeps

The battery charges. When I do an SMC reset the amber light turns green for a few seconds then it goes back amber but the issues still persists.

you guys might know what the issue is? feel like flinging my laptop off a bridge.

Best luck and thanks.

Try running it with the sleep sensor unplugged? you can do this by taking the hard drive rails out and unplugging a tiny ribbon. worth a shot right?

12v? Where? I was getting 3.4v on both G3hot and C4902. Yikes!

I get 2.01v on pin 14, and after I think I trigger G3hot it goes to 1.75v.

There is 12v on a fuse F7040. This feeds your system. on Pin 14 you should get a solid 3.2V this sends a signal to the smc witch controls the adapters lights.
It sounds like we could be looking at a dead charging regulator rather than dead SMC chip.
let me know what voltage you measure across the fuse, ensure the battery is unplugged when you take this measurement but the charger is plugged in.

Good luck

 

[Astroboy907]

There is 12v on a fuse F7040. This feeds your system. on Pin 14 you should get a solid 3.2V this sends a signal to the smc witch controls the adapters lights.
It sounds like we could be looking at a dead charging regulator rather than dead SMC chip.
let me know what voltage you measure across the fuse, ensure the battery is unplugged when you take this measurement but the charger is plugged in.

Good luck

I get 12.57v on F7040, but still 1.4-2v on pin 14 (counting from component top).

I'll search a bit and see if I can find the chip on digikey or eBay...
Edit: here's the cheapest US option that came up. Nothing on digikey or mouser 🙁
http://www.ebay.com/itm/221309899051

 

[ZZZAC]

I get 12.57v on F7040, but still 1.4-2v on pin 14 (counting from component top).

I'll search a bit and see if I can find the chip on digikey or eBay...
Edit: here's the cheapest US option that came up. Nothing on digikey or mouser 🙁
http://www.ebay.com/itm/221309899051

First try boot in SMC bypass, i cant remember if weve tried that.
If that doesnt work we can be fairly sure it is probably the charging IC
but first get a high res image and look for any capacitors or resistors around the charging IC incase your missing a component that has an effect on this chip.

 

[ZZZAC]

I will be changing the charging chip today, just to be sure. I use a dark IR rework station, using a BGA profile, what do you use to swap a chip of that level? I will post my test findings and any results.

Hey bud.
Im just starting my investigation into this and noticed R5280's resistance to ground is LOW like 32ohm and when you compare this with a working board that measure 32kohm or something we can tell something is short circuited. I assume its the same with you as we both have the same wierd 1.52k resistor that is fine out of circuit.
ill try trace this short and let you know where i get so you can get yours running again
😀

update: Not Charging IC
Noticed previus sings of liquid around the BILL light
not C6952
think the SMC is the only other component...
Pulled the SMC/ still short. miserable!

 

[Astroboy907]

First try boot in SMC bypass, i cant remember if weve tried that.
If that doesnt work we can be fairly sure it is probably the charging IC
but first get a high res image and look for any capacitors or resistors around the charging IC incase your missing a component that has an effect on this chip.

I tried it again and it boots into SMC bypass fine. Right now I'm trying to get an AHT running, but that's going to be a while.

All the caps and resistors immediately surrounding U7000 are all where they are supposed to be.

Another thing in case it helps - the charger has a very, very dim green light (can only see it in the dark). This is because of the U7000 output being below spec, I assume.
During the SMC bypass boots I get a green light on the battery charge indicator when the charger is unplugged.

Thanks for your help!

 

[AliveAndKicking]

Try running it with the sleep sensor unplugged? you can do this by taking the hard drive rails out and unplugging a tiny ribbon. worth a shot right?

Good luck

I just tried it, it didnt work. Nice thought though. I tried running of the charger by disconnecting the battery cable but I still get the same issue. Just to add, It takes about 2seconds for the fan to start spinning and the white light to turn on after pressing powe. Then it takes another 7 seconds for the laptop fan/light to restart. ehat else should i look to trouble shoot?

 

[ZZZAC]

I tried it again and it boots into SMC bypass fine. Right now I'm trying to get an AHT running, but that's going to be a while.

All the caps and resistors immediately surrounding U7000 are all where they are supposed to be.

Another thing in case it helps - the charger has a very, very dim green light (can only see it in the dark). This is because of the U7000 output being below spec, I assume.
During the SMC bypass boots I get a green light on the battery charge indicator when the charger is unplugged.

Thanks for your help!

The SMC is unhappy with something, and it could well be pin 14 of U7000 being low.

if you are experienced with this kind of work i find it easier to just replace the chip and if theres no change theres no change.

 

[Astroboy907]

The SMC is unhappy with something, and it could well be pin 14 of U7000 being low.

if you are experienced with this kind of work I find it easier to just replace the chip and if theres no change theres no change.

Makes sense.
I wouldn't say I'm experienced, but this is experience-building. I've just been hesitant because I haven't done this too much on a real computer, just some test boards. The chip should be here soon, I'll let you know how it goes 😀

I'm just happy that it's not the SMC chip - I wasn't looking forward to a BGA.

 

[ZZZAC]

Makes sense.
I wouldn't say I'm experienced, but this is experience-building. I've just been hesitant because I haven't done this too much on a real computer, just some test boards. The chip should be here soon, I'll let you know how it goes 😀

I'm just happy that it's not the SMC chip - I wasn't looking forward to a BGA.

Good luck. order more than one! i personally find using flux helps, and tinning the chip before it goes on the board helps aswell, make sure you push on the chip as often there are solder shorts underneeth and there very well hidden. When i first started messing about with these i wandered why my success rate was 1/5 lol

yeah its always nice to know for sure, i pulled an smc despite thinking 'that resistance is showing me a short, the SMC wont be short as the system still runs'
and i now need to find my stencil and spend an hour reballing the old smc and putting it back in the machine. absolutely miserable. 😡
i realised i overlooked a couple components witch would be my suspicion.

 

[Sheridansystems]

Hey bud.
Im just starting my investigation into this and noticed R5280's resistance to ground is LOW like 32ohm and when you compare this with a working board that measure 32kohm or something we can tell something is short circuited. I assume its the same with you as we both have the same wierd 1.52k resistor that is fine out of circuit.
ill try trace this short and let you know where i get so you can get yours running again
😀

update: Not Charging IC
Noticed previus sings of liquid around the BILL light
not C6952
think the SMC is the only other component...
Pulled the SMC/ still short. miserable!

I got the same results, after swapping the SMC-No change
Ive swapped the BIL cable just in case- No change
There was signs of water spillage near the BIL connector before the Ultrasonic bath. Could the BIL connector be shorting? I have a replacement BIL connector I may swap it or at least look underneath. I will look into it today and report back.

sorry i could not attach the pics but pin 4 on the BIL connector is damaged only viewable with my USB scope.
Didioh in an earlier post on this tread told me to check if 4 and 6 are shorted, I thought I checked it but it still may be an issue, I will swap the BIL connector today and let you know.

 

[mrwillvincent]

Odd power issue with MBP Early 2011 13"

Greetings mac rumours,

I have a MBP that will only boot when the Magsafe cable is attached AND the battery is removed or at less than 100% - the power button is completely unresponsive.

The problem started with a failing battery that had swelled to the point of making the click pad unusable. Towards the end of the life of this battery the MBP would fail to hibernate if the battery ran out, and upon being rebooted the computer would have reset it's clock to December 2001 and have forgotten recent additions to passes in the keychain.

This battery eventually failed (I presume) - leading to a computer that was completely unresponsive to the power button. I removed the battery, which led to the first instance of the computer only booting when connected to a power source. If the computer (now without battery) was connected to a power source, (which in turn leads it to boot up), then turned off again, the only way to reboot the computer was to physically disconnect and reconnect the Magsafe adapter.

I ordered a replacement battery and installed it, the problem of booting only by connection to power persisted. A novel twist was that when the battery is fully charged and displaying a green light the MPB will not boot at all when the magsafe is connected - the battery must be removed or at below 100% charge.

During normal operation (such as now) the power button remains completely unresponsive. A short press will not bring up the option to shutdown / sleep my computer and a long press will not perform a hard shut down, as per normal operation.

I've attempted to reset the SMC following Apple's instructions several times, to no effect, with the battery removed and with a working battery installed. Perhaps of note is that the times I've tried the SMC reset I've never experienced the LED on the Magsafe changing states or temporarily turning off.

Also to be noted is that this is the first time I've ever opened the back of my computer. I'm very inclined to repair as much myself, but if we're going into circuit boards it might be best to pay someone with experience.

Really stumped as to what's going on here - any takers?

Cheers in advance, Will.