Macbook 820-3115 Missing hard Disk

[Instafixx]

Hello,

I have a Macbook 820-3115 with the question mark sign.

Replaced the cable.
Tried a New SSD.

Issue Persists.

Cleaned the and Soldered the Connector of the Hard Disk on the board. It worked once and then again the same.
Went ahead and replaced the connector. Still the same.

What can be at fault here.

[ACS-Repair]

Re: Macbook 820-3115 Missing hard Disk

I had one of these once. Couldn't figure it out until I replaced the cable that runs from logic board to the drive. it's apparently a well know issue.
it looks like you have done this already but if the cable is not new, it may also be a bad cable.

[mon2]

Re: Macbook 820-3115 Missing hard Disk

Ditto the above comments by @ACS. Do NOT, repeat do NOT sharp crease the flex cable between the SSD / drive and the motherboard. The contacts will break and cause the fault. Found our tech was doing this repeatedly to get a nice bend of the shape of the cable. The client kept bringing back the unit with the same fault. Only after observing his installation procedure - told him to stop. It was like cleaning wrinkles out of a shirt - he kept applying pressure on the cable.

The last time, he did not do this and the unit worked fine.

[rookieme]

Re: Macbook 820-3115 Missing hard Disk

It was always the cable to me at same situations.
I never bothered to bend the new one at the corners so never had issues after replacing them.