Hello everyone,
I'm new to the forum, and having traveled the forum, I see that there really are professionals here!
So I bought a Unibody MacBook Pro 15-inch Mid 2009. It worked one day when trying to start it I had these symptoms:
- Black screen ( I put a light behnd the screen and nothink appears)
- Standby LED lit
- HDD running
- SuperDrive CD does not (there is no 5V on the Sata connector)
- Fan runs
- MagSafe Green and battery charge
- No startup sound
In fact, the mac turns on, it turns off after 2 seconds and then restarts and stays there. Only once it has started, but it was only for 5 minutes.
I removed everything (RAM HDD battery), always down.
The 2 Fuses are OK.
When I was able to restart, I did a PRAM reset. I also made a SMC reset, forcing the startup bypass the SMC, still life ...
I looked at the logic board under a microscope, and I saw no microcrack.
Having traveled the forum, I've seen some people with the same symptoms but I have not managed to find out if it was ok.
For your information, my logic board is 820-2533-A.
Thank you in advance to all
PS: sorry for my english!
I'm new to the forum, and having traveled the forum, I see that there really are professionals here!
So I bought a Unibody MacBook Pro 15-inch Mid 2009. It worked one day when trying to start it I had these symptoms:
- Black screen ( I put a light behnd the screen and nothink appears)
- Standby LED lit
- HDD running
- SuperDrive CD does not (there is no 5V on the Sata connector)
- Fan runs
- MagSafe Green and battery charge
- No startup sound
In fact, the mac turns on, it turns off after 2 seconds and then restarts and stays there. Only once it has started, but it was only for 5 minutes.
I removed everything (RAM HDD battery), always down.
The 2 Fuses are OK.
When I was able to restart, I did a PRAM reset. I also made a SMC reset, forcing the startup bypass the SMC, still life ...
I looked at the logic board under a microscope, and I saw no microcrack.
Having traveled the forum, I've seen some people with the same symptoms but I have not managed to find out if it was ok.
For your information, my logic board is 820-2533-A.
Thank you in advance to all
PS: sorry for my english!
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