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현재 버전 게시자: Kristen Gismondi (투표 내용) ,

텍스트:

Have similar problem. I thought it was my i7 cpu, but cpu works perfectly at another machine.
I give 12v to motherboard with my bench psu (cooling was off).
I found that the led start blinking WHEN i press cpu at the top left (around pin 221). I saw at boardview that this side is for communication with ram. With another cpu i have the same problem. I put a piece of paper to cpu pins to isolate the problem.
Even with the ram dimms off, the problem exists. Ram slots seemed perfect. Cpu slot pins seemed perfect.
+
+edit: Possible some secondary voltage was short. Found a low resitance (can’t remember how much) at PP3V3_S0 that i didn’t like, i inject 3v to check for hot areas, didn’t found.
+
+Then i assemble machine, boot it and works.
+
+Tried Apple Service Diagnostics, passed all tests.
+
+Hypotheses:
+
+It’s magically fixed (temporary or not)
+
+It’s something missing (still i didn’t find it)
+
+Blow the sd reader slot for dust, i might remove some piece of wire stucked within.
+
+I did something without my knowledge that fixed the problem.

현황:

-deleted
+open

편집자: Doctor IT ,

텍스트:

Have similar problem. I thought it was my i7 cpu, but cpu works perfectly at another machine.
I give 12v to motherboard with my bench psu (cooling was off).
I found that the led start blinking WHEN i press cpu at the top left (around pin 221). I saw at boardview that this side is for communication with ram. With another cpu i have the same problem. I put a piece of paper to cpu pins to isolate the problem.
Even with the ram dimms off, the problem exists. Ram slots seemed perfect. Cpu slot pins seemed perfect.
-
-
-
-edit: Possible some secondary voltage was short. Found a low resitance (can’t remember how much) at PP3V3_S0 that i didn’t like, i inject 3v to check for hot areas, didn’t found.
-
-Then i assemble machine, boot it and works.
-
-Tried Apple Service Diagnostics, passed all tests.
-
-
-
-Hypotheses:
-
-It’s magically fixed (temporary or not)
-
-It’s something missing (still i didn’t find it)
-
-Blow the sd reader slot for dust, i might remove some piece of wire stucked within.
-
-I did something without my knowledge that fixed the problem.

현황:

-open
+deleted

편집자: Doctor IT ,

텍스트:

Have similar problem. I thought it was my i7 cpu, but cpu works perfectly at another machine.
I give 12v to motherboard with my bench psu (cooling was off).
I found that the led start blinking WHEN i press cpu at the top left (around pin 221). I saw at boardview that this side is for communication with ram. With another cpu i have the same problem. I put a piece of paper to cpu pins to isolate the problem.
Even with the ram dimms off, the problem exists. Ram slots seemed perfect. Cpu slot pins seemed perfect.
+
+
+
+edit: Possible some secondary voltage was short. Found a low resitance (can’t remember how much) at PP3V3_S0 that i didn’t like, i inject 3v to check for hot areas, didn’t found.
+
+Then i assemble machine, boot it and works.
+
+Tried Apple Service Diagnostics, passed all tests.
+
+
+
+Hypotheses:
+
+It’s magically fixed (temporary or not)
+
+It’s something missing (still i didn’t find it)
+
+Blow the sd reader slot for dust, i might remove some piece of wire stucked within.
+
+I did something without my knowledge that fixed the problem.

현황:

open

원문 게시자: Doctor IT ,

텍스트:

Have similar problem. I thought it was my i7 cpu, but cpu works perfectly at another machine.

I give 12v to motherboard with my bench psu (cooling was off).

I found that the led start blinking WHEN i press cpu at the top left (around pin 221). I saw at boardview that this side is for communication with ram. With another cpu i have the same problem.  I put a piece of paper  to cpu pins to isolate the problem.

Even with the ram dimms off, the problem exists. Ram slots seemed perfect. Cpu slot pins seemed perfect.

현황:

open