Adata SU650 blue

[epeace2009]

Hi

This disk when I start shows all status flags in PC3000 on. I measured it uses 5V and current 134mA.

I have check near 5v rail resistors and capacitors and none show short circuit and main resistor R500 show 0.5ohm which is ok. There is no visible damage and burned components.

I cannot enter in safe mode.

Please can you give me some guidance  what to check more?

Thanks

[Data Recovery Guru]

Load the photo in Google images and search. Then compare for any missing components.

It looks like there are some areas that have been touched up with solder.

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[epeace2009]

Thanks 

I suspected that someone before me was doing some soldering on this pcb. 

As you sugested I tried to find this PCB on google but no luck. It seams that this series of disk using different chip ic controller depending of capacity. So as I saw 480GB use MAXIO chip controller and my version uses Sillicon Motion.

If you or somebody else has this model please upload picture?

[pbzcbf...@gmail.com]

There are 3 inductors. Measure the voltages between each inductor and ground. Those are your power supplies.

[epeace2009]

I measured inductor 1 near NAND chips 3.3V, inductor 2 behind R500 has 0.9V and inductor 3 right from inductor 2 has 1.2V.

[compos mentis]

Those voltages seem OK.

[compos mentis]

I would check the crystal. If that is OK, I would suspect a dead
controller.

[epeace2009]

What else should i check?

On Tuesday, July 7, 2026 at 7:33:02 PM UTC+2 pbzcbf...@gmail.com wrote:

Those voltages seem OK.

[compos mentis]

There is a SOT23-5 IC to the left of the crystal. I suspect it may be an
LDO regulator. Measure the voltages at the two largest capacitors (pins
1 and 6?).

[compos mentis]

Sorry, I should have said pins 1 and 5.

Can you tell us the markings on these power ICs?

[epeace2009]

Crystal working.  1.6V on pin1 and pin5 on SOT

Marking on sot  : 618

                               ON391

[compos mentis]

I'm only guessing that pins 1 and 5 are Vin and Vout. Measure the voltages at the capacitors. Vin should be 5V, or maybe 3.3V from the adjacent buck converter.

The date code on the controller is 2342. That's week 42 of 2023. That doesn't match any of the codes on the SOT23-5 IC. So far, I haven't been able to identify it.

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[pbzcbf...@gmail.com]

I'm wondering whether the SOT23-5 IC is a 1.8V regulator. Alternatively, it could be a load switch (Vin = Vout), but that begs the question, where is the 1.6V input generated or used?

Could you measure the voltages on each pin?

[epeace2009]

Ok I will try to measure every pin later today. Here is the picture of SOT23-5

[epeace2009]

Oh  I forgot to mention in just a second when i tried to push components and pcb I get capacity but it was only second. Also client told me that he had problem from start with initialization of disk and he move data connector or shake and disk initialize. 
Maybe crack on soldered components?

[pbzcbf...@gmail.com]

BGA balls?

[epeace2009]

Not sure. Could not see under microscope.

[compos mentis]

Try sandwiching the PCB between two rubber sheets, then squeeze it in a
vice. I've seen this work for one user.

[epeace2009]

I have measured once more pin 1 and pin 5 on sot23 between ground and pin1 is 4.98V and on pin 5 3.36V

[compos mentis]

It's a 3.3V LDO regulator, so it's working.

I'm betting on a controller failure.

[epeace2009]

Now I have tried with pre heater up to 200C and only I saw increase in current consumption up to 190mA. 

[RecuperoDati299]

With all respect

Looks like this is a short story made long

- Remove chips and test them on PC-3000 FLASH o similar tool

- if they read, pick a donor SSD and solder the chips on it

Regards

Ottieni BlueMail per cellulari

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