HDD GURU FORUMS

Hi to everyone, I hope that someone could give a hand in identifying some burned components. miraculously the disk is working when I connect as an external driver with an adapter.

https://drive.google.com/file/d/1OiaIZC ... sp=sharing

https://drive.google.com/file/d/1khl1nm ... sp=sharing

https://drive.google.com/file/d/1OiaIZC ... sp=sharing

I would appreciate any support or idea to get the part numbers of the components.

Thank you

The burnt component appears to be the NPN driver transistor for an external activity LED. The other is a dual LDO regulator, and it is undoubtedly functional.

The collector of the transistor is probably connected to pin #11 of the SATA power connector. This pin also serves as a Staggered Spin-Up input. It is normally grounded by the PSU cable, so I suspect that some misadventure with mixed modular cabling may have overvolted the transistor. Fortunately, the flash controller appears to have survived.

You should be able to remove the burnt transistor without affecting the functionality of the SSD.

A photo of the complete PCB would help to test my diagnosis.

DMG1012T, Diodes Inc, N-CHANNEL ENHANCEMENT MODE MOSFET, 20V, 0.63A, marking NA1xx, SOT523:
https://www.diodes.com/assets/Datasheets/DMG1012T.pdf

AP7344D-1833RH4-7, Diodes Inc, dual LDO regulator, 1.8V/3.3V, 300mA, marking DAK, X2-DFN1612-8:
https://www.diodes.com/datasheet/download/AP7344.pdf

Be aware that your 1st and 3rd photos are identical.

Thank you for your quick answer. here is the panorama picture.

https://drive.google.com/file/d/1vtWbqt ... sp=sharing

So, I realize that the LDO regulator's resistor is also broken.

https://drive.google.com/file/d/1TwHFyx ... sp=sharing

I appreciate your time.

If the resistor measures OK, and if the ENable pin of the IC is high, then I would think that there would be no need to be concerned. Just measure the two outputs (1.8V and 3.3V) to be sure.

This is my PCB:

https://www.hddoracle.com/download/file.php?id=9557&mode=view

AP7345D-1833RH4-7, Diodes Inc, dual LDO regulator, 1.8V/3.3V, 300mA, marking FAG, X2-DFN1612-8:
https://www.diodes.com/assets/Datasheets/AP7345D.pdf

I'm hijacking this thread a bit.

fzabkar wrote:This is my PCB:

https://www.hddoracle.com/download/file.php?id=9557&mode=view

This is what I do as well for markup, type text on a photo.

But, isn't there a better (not necessarily portable) way for markup a photo? I'm thinking like easily add perhaps balloons with some comments/thoughts and plain text on components - just like in your image - but with the bonus of editing all text / drawings at a later time, instead of working directly on the image data. Something like Visio, using a photo as background and then add annotations on the fly.

There must be some software specifically designed for image annotation, but which one?

bos wrote:There must be some software specifically designed for image annotation, but which one?

I couldn't find anything lightweight and settled on inkscape

Lardman wrote:

bos wrote:There must be some software specifically designed for image annotation, but which one?

I couldn't find anything lightweight and settled on inkscape

How does that work? Does Inkscape use its own image format, or does it embed its own vector data inside the EXIF metadata?