820-3023 random crashing

Kyle93

Active member
Arrived with 3 beeps. no liquid damage. Customer said it was very hot just before the beeping started. Reflowed ram to solve that issue. After customer had it for a few days it came back with report of random crashing/freezing with distortion/lines in the screen.

Passed full EFI Apple ASD.

Is there anything else to check on this? We haven't been able to reproduce the problem.
 

Kyle93

Active member
Is it worth it to try and reflow CPU or PCH, or recommended just to refund??

Still boot into OSX no problem
 

JohnB8812

New member
You can run Unigine Valley test to try and replicate the issues. Most of time, 3 beeps on these older 2011 boards ends up being a PCH or internal trace issue, so RAM reflow is not always a for sure fix on them like newer ones.
 

2informaticos

Administrator
Staff member
Reballing 16 RAM chips and finally end with CPU issue, or broken trace, is not the best time investment here.
You can try now to reflow CPU with quality flux too, to burn eventually crap underneath.
But do not expect miracles from any reflow...
 
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