HDD GURU FORUMS
http://forum.hddguru.com/

128GB TRM SSD gets hot when shorting ROM pins
http://forum.hddguru.com/viewtopic.php?f=10&t=45422		 Page 1 of 1
Author:  gameboybin [ June 23rd, 2025, 23:45 ]
Post subject:  128GB TRM SSD gets hot when shorting ROM pins
Hi, i have this TRM 128GB SSD that died and wont boot up
SM2259XT controller

Plugging it in. It draws 0.07amps-0.11amps and doesnt show in Disk manager. PC3000 BSY lights up and stuck there

I have tried looking for and testing the ROM pins but don't know if they are correct
4 couple of pins below with label J2 in the middle
2 Set of pins labeled JP3 and JP4

Upon shorting 2 bottom points of J2. The SSD drawed 0.4-0.6amps and the right side near the IC. I measure the IC which is fine. Maybe i am shorting the wrong points

Shorting other points like Jp3 and JP4 did nothing. the SSD still stayed in 0.07amps

Can anybody help me diagnose this case?

Attachments:
Screenshot 2025-06-24 104449.png
Screenshot 2025-06-24 104449.png [ 384.82 KiB | Viewed 657 times ]
bc403c65-07ea-423c-87c8-190b66147568.jpg
bc403c65-07ea-423c-87c8-190b66147568.jpg [ 291.8 KiB | Viewed 657 times ]
136dfe3b-f158-4017-83d7-ca9ff7b1cd12.jpg
136dfe3b-f158-4017-83d7-ca9ff7b1cd12.jpg [ 183.76 KiB | Viewed 657 times ]
9e8c3837-8470-43c7-9bad-f9c320f133d5.jpg
9e8c3837-8470-43c7-9bad-f9c320f133d5.jpg [ 293.66 KiB | Viewed 657 times ]
Author:  fzabkar [ June 24th, 2025, 0:59 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
Quote:
Upon shorting 2 bottom points of J2. The SSD drawed 0.4-0.6amps and the right side near the IC.

Those could be VCC and GND.

Measure the voltages at the 3 inductors.
Author:  gameboybin [ June 24th, 2025, 14:27 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
fzabkar wrote:
Quote:
Upon shorting 2 bottom points of J2. The SSD drawed 0.4-0.6amps and the right side near the IC.

Those could be VCC and GND.

Measure the voltages at the 3 inductors.


So i measured the voltages

Attachment:
Measured.JPG
Measured.JPG [ 668.61 KiB | Viewed 609 times ]
Author:  fzabkar [ June 24th, 2025, 14:40 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
Obviously the converter with an output voltage of 0V is your problem. Now measure the resistance between the inductor and ground. If it is shorted, then either the converter IC is bad, or there is a shorted component at the output.
Author:  gameboybin [ June 24th, 2025, 16:05 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
fzabkar wrote:
Obviously the converter with an output voltage of 0V is your problem. Now measure the resistance between the inductor and ground. If it is shorted, then either the converter IC is bad, or there is a shorted component at the output.


I measured the inductor. it is not shorted. But all components around it and the inductors itself shows 0V when plugged in

Attachment:
affc243941faf6a4afeb2.JPG
affc243941faf6a4afeb2.JPG [ 668.47 KiB | Viewed 600 times ]
Author:  fzabkar [ June 24th, 2025, 16:28 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
The IC must be bad or disabled. Can you identify its markings?

I find it hard to believe that all those capacitors are measuring 0V. At least some of them must be connected to the 5V supply.
Author:  fzabkar [ June 24th, 2025, 18:57 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
Measure the voltages on the pins of the working S2CA1 IC and then measure those same pins on the dead IC.
Author:  gameboybin [ June 25th, 2025, 12:52 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
fzabkar wrote:
Measure the voltages on the pins of the working S2CA1 IC and then measure those same pins on the dead IC.


So i measured those IC. The ICs are labeled S2DKA
[url]
https://youtu.be/zHb0FU2pIFM[/url]

Attachment:
measured 3.JPG
measured 3.JPG [ 679.72 KiB | Viewed 543 times ]
Author:  fzabkar [ June 25th, 2025, 14:58 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
It does appear that the IC is faulty. It is enabled, but there is no output.

The IC could be similar to this:

https://datasheet.lcsc.com/lcsc/Wuxi-Chipown-Micro-electronics-APS2420ATBER_C130331.pdf

The pinout appears to match, but the feedback voltage is different. Yours is 0.7V whereas the APS2420 has an FB voltage of 0.6V.

The marking code appears to be S2xyp, but I haven't been able to find this IC. However, if you can confirm the FB voltage, I may be able to find a compatible substitute.

PG = Power Good output, active high.

Make sure that the inductor is not open circuit (unlikely).

This is a 3A version of the IC (S6xyp / S5xyp):

https://datasheet4u.com/pdf-down/A/P/S/APS2430-Chipown.pdf

Attachments:
APS2420_pinout.gif
APS2420_pinout.gif [ 44.33 KiB | Viewed 532 times ]
APS2420_pin_defs.gif
APS2420_pin_defs.gif [ 92.4 KiB | Viewed 532 times ]
Author:  fzabkar [ June 25th, 2025, 15:35 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
I found one of my earlier posts. S2xyp is associated with the 5-pin version, but yours is 6-pin. Very confusing.

APS2420ATBER, Chipown, Synchronous buck regulator, 1MHz，2.0A, 2.5V - 6.5Vin, marking S2xyp, SOT-23-5L:

https://images.chipyun.com/pdf/C130331_1505703382114975241.pdf
Author:  fzabkar [ June 26th, 2025, 15:00 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
You can use an adjustable lab PSU to inject a supply voltage after removing the bad IC. Start with 1V and then slowly increase the voltage until the FB pin is at 0.6V. The output from the lab PSU should then be correct.

(Not my idea, but I can't remember where I saw it.)

Attachments:
Vout_injection.gif
Vout_injection.gif [ 21.41 KiB | Viewed 490 times ]
Author:  gameboybin [ June 26th, 2025, 20:04 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
fzabkar wrote:
I found one of my earlier posts. S2xyp is associated with the 5-pin version, but yours is 6-pin. Very confusing.

APS2420ATBER, Chipown, Synchronous buck regulator, 1MHz，2.0A, 2.5V - 6.5Vin, marking S2xyp, SOT-23-5L:

https://images.chipyun.com/pdf/C130331_1505703382114975241.pdf


Well i did found an exact donor board. Measured the IC it is totally working. I swapped the IC over. And just after 1 power up. The IC died just like before swapping

Poof and its gone!

Attachment:
50e6d875-ba20-4fb7-9be2-8dc191c89a5c.jpeg
50e6d875-ba20-4fb7-9be2-8dc191c89a5c.jpeg [ 47.77 KiB | Viewed 480 times ]
Author:  gameboybin [ June 26th, 2025, 20:08 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
Sorry. Here is a better quality photo

Attachment:
802b770359e2eebcb7f3.jpg
802b770359e2eebcb7f3.jpg [ 655.68 KiB | Viewed 480 times ]
Author:  fzabkar [ June 29th, 2025, 4:40 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
Did you test the donor before cannibalising it? Did you measure its voltages?

If you return the IC to the donor, is the donor now dead?

All I can think of is that there is a shorted load or shorted turns in the inductor.
Author:  gameboybin [ June 29th, 2025, 9:44 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
fzabkar wrote:
Did you test the donor before cannibalising it? Did you measure its voltages?

If you return the IC to the donor, is the donor now dead?

All I can think of is that there is a shorted load or shorted turns in the inductor.


Yes, the IC of the donor is fully functional because the donor still works and shows in the computer? I did swap back the IC though, and the IC is not dead at all. So the problem is not the IC!
Author:  fzabkar [ June 29th, 2025, 19:33 ]
Post subject:  Re: 128GB TRM SSD gets hot when shorting ROM pins
Measure the voltage on the donor, and then carefully inject the same voltage into the patient, assuming there are no shorts.
Page 1 of 1 All times are UTC - 5 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/