MacBook mid 2012 fan spin sleep stays on

Hi,

Just a issue with my macbook mid 2012

no water damaged, no corrosion very clean

Sometimes it turns on and it works but this could be about 100 attempts.

Normally when i turn on my macbook fan spin normal speed and white sleep stays on

no external output

when i take out ram it beeps so it knows when there is no ram

i have tried the following

smc ,pram reset

changed ram with working ram,changed battery,changed charger

unplug all connections apart from lcd

Does anybody have any ideas( Looks like Logic board)

Ответ на этот вопрос У меня та же проблема

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white or black display? Does it tone (POST)?

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black display no chime

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