macbook early 2011 , conecting problems

[highpulse]

well i received today this one, first thing battery was dead also she was with the double of its size , she got fater . removed the battery , and turn it on .
once it turn on , the stanby by led(white) flash around 7 to 8 times , then machine shutdown , then machine turn on again flash one or two times , then turn on with the chime sounds , i can notice shes trying to enter the opertating system (yosemite) but then she restart .

I tryed removing the hdd cable to see if the working way is the same , but yes still doing the same thing even with the hdd cable connected . thinking this could be a keyboard problem , but on this model im not finding the g3HOT pins to shut without having keyboard attached .
anyone had this issues before ? tips are welcome

thk in advance

[dellxps15]

Re: macbook early 2011 , conecting problems

is it a macbook pro 15 inch ? i7 and amd 6750 ?

if so probably vga is going to die, very common on this model.

[highpulse]

Re: macbook early 2011 , conecting problems

its a 820-2915-b board

[dellxps15]

Re: macbook early 2011 , conecting problems

yes, is the defective one. u can try disable discrete gpu and use only integrated, or replace chip with a new one.

reball only will last few months.

there is some way to disable discrete gpu and use intel vga by moving some files (the ati ones to a temporany directory and make a backup of existing intel video card kext.

[highpulse]

Re: macbook early 2011 , conecting problems

yes i7 quad core cpu , with AMD chipset grafic

[highpulse]

Re: macbook early 2011 , conecting problems

i can't enter system , shutdown or restart during boot .
so guess just to be sure will give a good heat on the chip if its stay stable , i call client and will inform we need to replace the AMD chipset

[dellxps15]

Re: macbook early 2011 , conecting problems

those macbook have mainboard tht absorb heat very much and gpu has ram also at the bottom of pcb.... also havent line guide to place back chip

try disable discrete gpu following some guide to see if it gpu failure, or try a fast reflow on the chip then use gfxcardstatus or some guide like here:
http://apple.stackexchange.com/quest...hics-macbook-p

[highpulse]

Re: macbook early 2011 , conecting problems

well give a bit of hot air with the hot air station , still the same , will reball it to be sure before calling client , since this machine also have the HM chipset , but in your experience usually is the AMD cihpset , well i hope you right , at least at the first time you were right with the previous one .
altough computer went now to the system , after giving a bit of heat on the AMD gpu , but after some 2 minutes it shut down and restart

[highpulse]

Re: macbook early 2011 , conecting problems

but something strage the computer dont have battery only DC , once i connect the DC the machine start working alone !!!! bad gpu does this ? really weird !!

[dellxps15]

Re: macbook early 2011 , conecting problems

without keyboard or battery (dont remember) machine do that yes, also without touchpad fan spin at max

[highpulse]

Re: macbook early 2011 , conecting problems

well thk for the tips , the computer was with a fat battery , damaged ! so its without battery , keyboard is connected , will now reball the chipset just to see if it works fine or not , if so will make orçament with gpu replacement and new battery

cheers mate

[highpulse]

Re: macbook early 2011 , conecting problems

well its working , but still making the boot thing , flashing and shutdown then it turn on and goes to system
without battery impossible to know if this is normal or not .

[dellxps15]

Re: macbook early 2011 , conecting problems

what not normal? that it shut down ? no it's not normal
system power on itself ? it's normal , dont remember why this happen.... if no battery, no keyboard or something else, but i had a 13 inch i7 for repair and without something it did so.

have u reballed amd chip?

intel chip should just be fine.... it make low temperature and macbook board will just dissipate it's hot good.

if u have reballed amd and still this problem, we need to focus on something else.

try boot macbook in verbose:
command+V and see when it shut down the error.