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820-4924 Ssd issues - Reboot White Apple Logo

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Titotinton

Member
Hi Duke!! Hi Everyone!!

820-4924 absolutly no Water Damage, no drops!!

Test With other housing ( new battery, new flexes, new all ) And iT keeps restarting ( i flash with OS X HS , And first part ok, but second startup it reboot after White Apple )




Tried 4 diff ssd, 2 512 gb Ones, a 128 gb one, And a 256 one, all the same issue

Thanks Dear
 
T

Titotinton

Member
Hi John i will prepare a Unit to boot externally!! I ll back to You :)

Hi SMMrepair!! You mean power on macbook without ssd connected? Thabks !
 
T

Titotinton

Member
Hi Duke!! sometimes it 1/3 of the loading bar, sometimes on 2/3 line, tomorrow if You say so, i will take a photo, so that You can see when it really happens the reboot (% of the screen !!

Worth mentioning
:IT can be format no Problem( from a pen with OS X) i try 5 diff ssd: 512 gb, 256 gb And 128 gb , And the same issue

thanks Dear
 
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T

Titotinton

Member
Hey Duke!! Something interesting to mention, only when i try with the 256 gb ssd, it let me boot complétly to login screen, i log with guest user, And after 1/2 min, kernel panic, And then reboot ( And after that never let me in again) 1/3 or less of loading bar with Apple logo, And reboots

tomorrow i will boot vía externa USB And Tell details !

thanks Dear
 
D

dukefawks

Administrator
If this is not liquid then it could be absolutely anything. Was it dropped maybe? Could be bad RAM too, sorry to say that these cases are usually pretty hopeless.
 
T

Titotinton

Member
Hi Duke!! RaM too? If it boots ok by usb, we can discard RAM, or it can be nevertheless?

Drop, cant be :) its brand brand new, no liquid attack

Thanks :)
 
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T

Titotinton

Member
Hey Duke!! When i try to install Yosemite, 1st time it try to install but it reboots, second time it says “cannot install osx on this computer” , And when i try to install The captain, it freezes on startup loading bar, And the cursor has the colors of the rainbow, And it freezes!!

i am trying all this, with two USB drives, one with the installable files, And the other the destination !!

Thanks Dear Duke
 
D

dukefawks

Administrator
Messing with the RAM like that is a last resort. You can try it but I suspect the machine has had an impact and traces will be damaged.

Make sure the clock is set correctly too before installing or it won't work. Use the "date" command in terminal before continuing with the install.
 
T

Titotinton

Member
Hey Duke!! I ran Memtest 4.23 on single User Mode, And no
errors!! What can i measure, what can i do? This is a very Good client of mine , i Need to help him :)

thanks Dear
 
T

Titotinton

Member
Hey duke other curiosity, i boot vía usb, And it restarts too, but after some time 2-3 minutes !! But Ram is Good, acording to Memtest

Thanks :)
 
T

Titotinton

Member
Hi Duke!!

I have some updates:

C2606, was kindda of brown ( like roasted... ) on leg 1 ( pp1v2_s3) i measure diode mode and it gives 0,082, And on a working board 0,126!! I repealed it but same measurements !! Nevertheless is measures fine 1,2 volts!! I am confused

P.D: Have 2 working board , the measure is the same 0,126!!
Thanks Dear
 
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dukefawks

Administrator
I really have no idea. Random kernel panic issues like this can be absolutely anything and are a huge waste of time for a "one off" problem. I recommend not wasting time with this board if you cannot find any liquid or if there is no history as to how this may have happened.
 
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