Ir para o conteúdo principal

The Early 2009 Mac Pro—also known as the Mac Pro 4,1—introduced Intel's Nehalem architecture to Apple's line of professional desktop computers in March 2009. The Mac Pro 5,1 used the same interior design but received further CPU updates in 2010 and 2012.

200 Perguntas Visualizar todos

logic board or power supply?

i recently had a power surge in my house while my mac pro 2012 tower was on. tower wont power up, but when i plug ac cord back in i get a red light flash and 5v light comes on when i press diagnostic button. is there anyway i can troubleshoot it my self to see whats the problem? i have some technical experience but not an expert

Responder a esta pergunta Também tenho esse problema

Esta é uma boa pergunta?

Pontuação 1
Adicionar um comentário

3 respostas

Pergunta mais útil

Most likely the power supply but first try hitting the CUDA reset button. It is located on the logic board between the front of the machine and the fan. Use a pencil eraser to do it.

UPDATE

https://d3nevzfk7ii3be.cloudfront.net/ig...

Look in the upper left hand corner of the board. Go down to the second input socket , then just to the left of that. White button surrounded by silver square.

Esta resposta foi útil?

Pontuação 3

1 comentário:

is that the same one that lights up when you press it?

por

Adicionar um comentário

I just recently had to replace the logic board on my 4,1 (flashed to 5,1). Tore it down to the minimum specs as per the Apple Tech Guide and as soon as I installed the Processor Tray I was getting a flashing white light on the power.

It was either the PSU, the logic board (backpane), or the Processor Tray. I bought another cheap 4,1 Mac Pro that was running well and started replacing parts just one at a time. Only thing that fixed it was replacing the backpane.

Unfortunately, there was very little I could do to diagnose this besides replacing the pieces one by one.

Thankfully, I can now just order a replacement backpane and then rebuild the “new” Mac Pro and repurpose it or sell it.

Esta resposta foi útil?

Pontuação 0
Adicionar um comentário

About two weeks ago my mac pro tb the same incident happened. The energy in the office decreased during my work. Since then, my computer has been on, but after a while it shuts down and turns on the red light on the logic board. I believe there is no other solution but to change the logic board. In that case, it's better to buy another computer.

Esta resposta foi útil?

Pontuação 0

1 comentário:

About two weeks ago my mac pro tb the same incident happened. The energy in the office decreased during my work. Since then, my computer has been on, but after a while it shuts down and turns on the red light on the logic board. I believe there is no other solution but to change the logic board. In that case, it's better to buy another computer.

por

Adicionar um comentário

Adicionar a sua resposta

Corey March será eternamente grato(a).
Exibir estatísticas:

Últimas 24 horas: 1

Últimos 7 dias: 4

Últimos 30 dias: 11

Duração total: 815