Start back at the DC-in board and make sure that the centre pin is putting out 3V. If yes then you need to move to the charger circuit.
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SMC Issue on MBP 13 - Hardware Troubleshooting Guide
- Thread starter Dadioh
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Start back at the DC-in board and make sure that the centre pin is putting out 3V. If yes then you need to move to the charger circuit.
just wanted to say THANKS to Dadioh for starting this thread it is FULL of good info
Thanks. I wish I had more time to spend cleaning up the thread but limited time to spend. :-(
Thank you for your replay. I am still not sure what is causing 0v (ground) on pin 3 of Q6915
I use boardview file with block diagram. Otherwise it would be impossible to trace components. In board view one can search for a component. I will try to attach both schematics and boardview files.
with kind regards
View attachment 340108
Awesome thanks for this man!! btw do you have any more of these schematics you would like to share??? Also what is a good mac application to open this file??
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no worries btw do you use gtalk???
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http://www.ebay.com/itm/FREE-SHIPPI...ultDomain_0&hash=item256f9fdc38#ht_2225wt_702
do these look like the right ones???
do these look like the right ones???
Well the part number seems right but the picture they have for the auction is a 48 pin package. The ISL6258 is a 28 pin QFN package. Maybe they just used a stock picture and got it wrong but double check to make sure they are shipping you the right part.
Hi all!
Last week i bought a MBP early 2011 with a fruit juice spill. According to the previous owner the MBP didnt work at all.
After receiving the MBP i didn't turn it on, because that could cause more damage. I took it apart and the dried up juice was everywhere! I cleaned it with 99% alcohol and a toothbrush, after a lot of minutes cleaning there was still a lot of juice left, but decided to turn it on anyway and TADAAA the MBP worked like a charm.
I still wanted the logic board to be clean and since the Alcohol wasn't helping with cleaning all the sticky stuff i decided to buy some clean water (I don't know how to call it in English, but it's pure water and it shouldn't conduct electricity). I made the water hot and than cleaned the logic board with a toothbrush and all the sticky stuff came off easily. After that I let the Logic board dry and even used a hairdryer for a while. Reassembled the MBP and turned it on, but there is no picture
Here are the symptoms:
It turns on. leds on the front of the MBP are stable. Fan goes to full speed in a few seconds and stays at full speed. The battery is charging. No picture, backlight or chime..
I tried several things like, replacing the ram, trying to boot only with adapter and LCD screen, reset SMC, SMC bypass. All no luck. When I do the SMC bypass the fan goed immediately to full speed instead of slowly going to full speed. So there is a difference, but still no picture, backlight or chime.
So it was a bad idea to use that water, I know now
Is there someone that can point me in the right direction?
efi firmware issue i5
hey guys
i have a 13" macbook pro i5 2.3
had some water damage around the efi firmware chip
cleaned up board and now it boots to the 9 beeps
i had a 17inch unibody mbp do this before and i was able to swap the firmware from a donor board and got it up and running but in this case I don't have a donor board
anyway could i buy a programmer online and reflash the chip?
it seems theres a way as i found these guys in new jersey who are able reflash or replace the chip on ones with the new efi passwords
http://jerseycityrepair.com/remove-firmware-password-macbook-air/
any help would be appericated
thanks
hey guys
i have a 13" macbook pro i5 2.3
had some water damage around the efi firmware chip
cleaned up board and now it boots to the 9 beeps
i had a 17inch unibody mbp do this before and i was able to swap the firmware from a donor board and got it up and running but in this case I don't have a donor board
anyway could i buy a programmer online and reflash the chip?
it seems theres a way as i found these guys in new jersey who are able reflash or replace the chip on ones with the new efi passwords
http://jerseycityrepair.com/remove-firmware-password-macbook-air/
any help would be appericated
thanks
I have a MacBook 15 unibody with slight water damage. I got it working 100% but one day I shut it off and turn it back on the the display is no longer working.
The backlight fuse is good. I cleaned all the spill on the board. Now sometimes the display will turn on but as soon as it loads to the home page it shuts off. Please help me trouble shoot this board
another thing i forgot to add i did a apple service diagnostic and it have passed all the test
The backlight fuse is good. I cleaned all the spill on the board. Now sometimes the display will turn on but as soon as it loads to the home page it shuts off. Please help me trouble shoot this board
another thing i forgot to add i did a apple service diagnostic and it have passed all the test
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Hi Guys,
I have an issue with a Early 2011 MBP that had water spilled on it, magsafe would not even show a light on and of course no boot. I cleaned all the oxidation off the logic board and put it back together but it still wont boot. Not i get light on magsafe and the front SIL light blinks every 5 seconds and never boots (i tried this with the back cover off and while the sil light blinks teh fan spins up slightly for 1/4 second and nothing. SO Light and fan every 5 seconds. this also happens when its just on battery and i press the power button. I just cleaned the logic board and the mag safe pcb, think there might be a short somewhere near the power switch?
Thanks for any suggestions.
I have an issue with a Early 2011 MBP that had water spilled on it, magsafe would not even show a light on and of course no boot. I cleaned all the oxidation off the logic board and put it back together but it still wont boot. Not i get light on magsafe and the front SIL light blinks every 5 seconds and never boots (i tried this with the back cover off and while the sil light blinks teh fan spins up slightly for 1/4 second and nothing. SO Light and fan every 5 seconds. this also happens when its just on battery and i press the power button. I just cleaned the logic board and the mag safe pcb, think there might be a short somewhere near the power switch?
Thanks for any suggestions.
I assume no chime? If you remove the memory does it come alive enough to give you the "no memory" beeps? That might tell you if the CPU is at least alive enough to determine no memory. One more piece to the puzzle anyway.
No Chimes and no POST beeps, i left the memory at work yesterday tried just to see if it would post after cleaning with no memory and nothing, today i brought the memory and same thing.
i'm not sure about that.. try contacting a seller on ebay, digkey might have them..
This is where I get them in Canada.
http://www.digikey.ca/product-search/en?x=0&y=0&lang=en&site=ca&KeyWords=isl6258a
In USA
http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&KeyWords=sl6258a
I see they are out of stock.
Not really. They are very odd symptoms but the SMC is obviously not happy. I would go around the board checking all the power supply outputs but if it shuts down right away that is tough to do. Sorry I can't be more help without having the logic board right in front of me.
I have a new project its an a1342 when i plugged in the charger light turns green to orange and it will charge till the battery is full. I have tried the smc bypass no luck. but i notice every time i press the power button the mag light turns from orange to green. within a few seconds it will charge again.Also g3hot is getting 3.4v but when jumped together the mag just turn green and back to orange Any suggestions?
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MacBook Pro Unibody 13"
Hi,
I have followed this thread as I have a similar problem with mine. It wont charge and the MagSafe LED is slightly flickering between red and green. Together with a skilled friend we started to track down the issue trying to reset SMC, etc, without result. After disassembling we found out that the motherboard had been exposed to liquid and we therefore cleaned it without any result. Next was to measure it up and we found some schemes on the web to understand the HW. We have not yet isolated the problem fully but we are close. It is therefore I would like you guys to come with some feedback.
What we have come up to is that the gate on the first transistor which the input power supply goes to, remains high. The G3Hot is OK.
Br
Henrik
Hi,
I have followed this thread as I have a similar problem with mine. It wont charge and the MagSafe LED is slightly flickering between red and green. Together with a skilled friend we started to track down the issue trying to reset SMC, etc, without result. After disassembling we found out that the motherboard had been exposed to liquid and we therefore cleaned it without any result. Next was to measure it up and we found some schemes on the web to understand the HW. We have not yet isolated the problem fully but we are close. It is therefore I would like you guys to come with some feedback.
What we have come up to is that the gate on the first transistor which the input power supply goes to, remains high. The G3Hot is OK.
Br
Henrik
Hi Everybody,
I have a problem with MBP 13 2010 2.4 G soaked in a coca cola can.
a baby makes its stupidity and parents realized the damage only four days later.
After Logicboard was cleaned. I realise à burned part. please check attached pic.
Is some one can give me a description of this part?
Thanks
logic board http://www.ifixit.com/MacBook-Parts/MacBook-Pro-13-Inch-Unibody-2-4-GHz-Logic-Board/IF163-018
I have a problem with MBP 13 2010 2.4 G soaked in a coca cola can.
a baby makes its stupidity and parents realized the damage only four days later.
After Logicboard was cleaned. I realise à burned part. please check attached pic.
Is some one can give me a description of this part?
Thanks
logic board http://www.ifixit.com/MacBook-Parts/MacBook-Pro-13-Inch-Unibody-2-4-GHz-Logic-Board/IF163-018
Hi Everybody,
I have a problem with MBP 13 2010 2.4 G soaked in a coca cola can.
a baby makes its stupidity and parents realized the damage only four days later.
After Logicboard was cleaned. I realise à burned part. please check attached pic.
Is some one can give me a description of this part?
Thanks
Image
logic board http://www.ifixit.com/MacBook-Parts/MacBook-Pro-13-Inch-Unibody-2-4-GHz-Logic-Board/IF163-018
hey bondak, what is the part number of the board? it will be 820-XXXX
ALSO FOR EVERYONE FOLLOWING THE THREAD, I'M TRYING TO GET TOGETHER A VISUAL REPAIR GUIDE. I'M TRYING TO MAP OUT THE MAIN MOSFETS AND PROBLEM AREAS. BUT MY TIME IS LIMITED, AND THERE ARE WAY TOO MANY BOARDS OUT THERE FOR ME TO ACCOMPLISH THIS ANY TIME SOON
IF ANY ONE WANTS TO HELP OUT, I AND EVERYONE ELSE I'M SURE WOULD APPRECIATE IT. I'M NEEDING (VERY) HIGH RESOLUTION PICTURES OF ANY BOARDS YOU CAN (UNIBODIES SINCE THIS IS A UNIBODY THREAD). AND IF YOU CAN NOT GET A HIGH ENOUGH RES PICTURE FOR ME TO READ THE #s AND MARKINGS OF THE CHIPS, I WOULD NEED THEM LABELED. ANYONE ABLE TO HELP OUT WITH THIS PLEASE PM ME
Dead 15" unibody 2.4ghz 820-2330a
Hello there! I was wondering if any of you guys can help me out on fixing a dead 15" unibody motherboard. I have the schematics for the board but I cannot seem to find the cause of the problem.
The mobo wont turn on.
Magsafe produce a fainted light green light.
It charges the battery, but when I perform the SMC reset stop the charging cycle. No boot, no chime no nothing
Voltage put out from the magsafe is 16.5v
Any ideas where to test??? Or which power mosfets I need to check if any???
I would really appreciate any suggestions/ideas. Thanks in advance guys
Hello there! I was wondering if any of you guys can help me out on fixing a dead 15" unibody motherboard. I have the schematics for the board but I cannot seem to find the cause of the problem.
The mobo wont turn on.
Magsafe produce a fainted light green light.
It charges the battery, but when I perform the SMC reset stop the charging cycle. No boot, no chime no nothing
Voltage put out from the magsafe is 16.5v
Any ideas where to test??? Or which power mosfets I need to check if any???
I would really appreciate any suggestions/ideas. Thanks in advance guys