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OCZ Vertex 4 128gb UART Recovery method? http://forum.hddguru.com/viewtopic.php?f=10&t=26540 |
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Author: | fzabkar [ November 29th, 2018, 21:32 ] |
Post subject: | Re: OCZ Vertex 4 128gb UART Recovery method? |
I don't think it will change anything, but could you measure the voltages at each pin of U3 (near V3)? I don't know what this chip does, but I'm wondering if it is a power supply monitor. |
Author: | fzabkar [ November 30th, 2018, 4:02 ] |
Post subject: | Re: OCZ Vertex 4 128gb UART Recovery method? |
ykohavix wrote: can PC-3000 be used by every one ? Sure, if you have the $$$$$ |
Author: | ykohavix [ November 30th, 2018, 8:23 ] |
Post subject: | Re: OCZ Vertex 4 128gb UART Recovery method? |
fzabkar wrote: I don't think it will change anything, but could you measure the voltages at each pin of U3 (near V3)? I don't know what this chip does, but I'm wondering if it is a power supply monitor. U3 Pins voltage readings (start from white arrow) pin 1-6 anti-clockwise order: 1=1.79 2=0.5mv 3=3.06 4=3.17 5=0.5mv 6=3.28 |
Author: | fzabkar [ November 30th, 2018, 14:50 ] |
Post subject: | Re: OCZ Vertex 4 128gb UART Recovery method? |
ICBW, but U3 appears to be a dual voltage monitor with individual reset outputs on pins 3 and 4. Pins 1 and 6 appear to be the monitored voltages, namely 1.8V and 3.3V. ISTM that the outputs are OK. |
Author: | ykohavix [ December 1st, 2018, 7:10 ] |
Post subject: | Re: OCZ Vertex 4 128gb UART Recovery method? |
I got another working 64GB unit, excat same Vertex 4 product. Might worth open it and compare at certain point that can lead us to solution? Or the "CPU Panic mode / FW fault" will be the case no matter what we do? |
Author: | fzabkar [ December 1st, 2018, 14:38 ] |
Post subject: | Re: OCZ Vertex 4 128gb UART Recovery method? |
I don't think that will help us. You could experiment with the firmware test point and observe how your good drive behaves when this test point is shorted to ground at power-on. Then check whether the data are still intact. This will at least tell you whether or not the controller is brain dead. You might also like to connect a USB-TTL serial adapter to the Tx/Rx UART pins and see whether there is any diagnostic output. |
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