January 23rd, 2023, 3:25
fzabkar wrote:Now we have someone proposing a secret cabal along those same lines.
https://forum.hddguru.com/viewtopic.php?f=3&t=43008
January 27th, 2023, 12:45
January 27th, 2023, 13:33
January 27th, 2023, 20:09
silcontool wrote:Ok trying to understand the problem with the drive. Wondering how come the ssd size at least was reported when it is inside a USB based enclosure and it wasn't even detected while directly connected on the SATA port of the LSI controller I've in my PC. As fzabkar said, it is very well that one of the NANDs is bad which is probably making the controller not allowing the access. Then the question is why the firmware is not allowing the access to the good NANDs ? probably f/w is not written for that ?
Going to check the voltages and get to the UART.
January 27th, 2023, 21:48
DRUG wrote:
If you see capacity, your controller is ok.
It gets bsy when trying to read because he is doing background operations. Terminal is locked, but you can see output.
It is easy to recover the data in that case, but since you want to research I will let you go for it
Remember, terminal is your friend.
January 28th, 2023, 3:28
January 28th, 2023, 19:29
January 28th, 2023, 22:19
silcontool wrote:Connecting to 2 pins UART next to JTAG (5) pins I get some garbage spits out on the terminal. When I short the safe mode pins ( next to UART) and connect the disk back to USB port, I get no output on the terminal and disk won't appear in "diskmr". As soon as remove the short, I see the same garbage spit on the screen and the disk appears in the "diskmgr".
Not sure what could be wrong here. Do I have to short it for a long period > 30 mins ?
January 28th, 2023, 22:41
January 28th, 2023, 22:42
silcontool wrote:Well I tried 15200 8N1 and then reduced the speed down up to 9600 but nothing helped. Then I thought that UART might get activated in the safe mode which is activated by shorting the safe mode pins. So either way, I didn't see a proper output on the puty.
January 28th, 2023, 22:49
January 28th, 2023, 23:09
January 29th, 2023, 0:32
January 29th, 2023, 1:16
January 29th, 2023, 6:08
DRUG wrote:Are you using 3.3v or 1.8v on terminal? If 3.3 try 1.8v.
If still nothing happens connect ground pin also.
January 29th, 2023, 14:06
fzabkar wrote:With power turned off, measure the resistance between V3 and ground. Perhaps one of components on this rail is shorted.
Also test for shorts at Vbx and Vby.
DRUG wrote:Can you show me a picture of the device you are using as terminal?
January 29th, 2023, 14:14
silcontool wrote:fzabkar wrote:With power turned off, measure the resistance between V3 and ground. Perhaps one of components on this rail is shorted.
Also test for shorts at Vbx and Vby.
V3 - GND - 11 M Ohms. Vby - GND sems short. Wonder if there is circuit diagram of this board somewhere?DRUG wrote:Can you show me a picture of the device you are using as terminal?
Here it is.
Thank you for trying to help me on here. Appreciate your time and help.
January 29th, 2023, 14:28
silcontool wrote:fzabkar wrote:With power turned off, measure the resistance between V3 and ground. Perhaps one of components on this rail is shorted.
Also test for shorts at Vbx and Vby.
V3 - GND - 11 M Ohms. Vby - GND sems short.
January 29th, 2023, 15:21
January 29th, 2023, 16:10
silcontool wrote:Connecting to 2 pins UART next to JTAG (5) pins I get some garbage spits out on the terminal. When I short the safe mode pins ( next to UART) and connect the disk back to USB port, I get no output on the terminal and disk won't appear in "diskmr". As soon as remove the short, I see the same garbage spit on the screen and the disk appears in the "diskmgr".
Not sure what could be wrong here. Do I have to short it for a long period > 30 mins ?
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