April 4th, 2012, 0:19
April 4th, 2012, 9:42
BlackST wrote:Keep on trying...
April 4th, 2012, 13:01
April 4th, 2012, 16:31
April 4th, 2012, 17:38
BEP wrote:- The only HDD who survived the accident (caused by a wrong voltage) was saved thanks to a TVS diode, what's your problem with that?
BEP wrote:- Data on the SSD is not important, luckily.
BEP wrote:- Again, I don't know what else I can try which will cost less than a new - and better - SSD.
BEP wrote:- Next time you have something to say but you are "not allowed to", you'll better say nothing. There is no point in making your interlocutor curious.
April 5th, 2012, 17:51
April 6th, 2012, 2:59
fzabkar wrote:BTW, even now you don't need to desolder each flash memory. Anyone who understands the concept of a bus will realise that the chips can be read in-situ with just a little bit of wiring. Furthermore, it is no harder to repair/replace the chips on an SSD than on any other board with smt components ... if you have the knowhow.
fzabkar wrote:To advocate shotgunning as a primary troubleshooting approach is admitting defeat from the start
April 6th, 2012, 3:21
fzabkar wrote: you did far more than most data recovery professionals would be able to do.
April 6th, 2012, 9:38
April 6th, 2012, 10:23
by myself? I am open to all realistic suggestions.check/swap/fix the controller and check/read all the flash memories
April 6th, 2012, 11:10
April 6th, 2012, 11:14
BEP wrote:I try to stay neutral (I'm Swiss after all)
April 8th, 2012, 7:00
April 8th, 2012, 8:20
April 8th, 2012, 9:23
fzabkar wrote:@northwind, in order to be in a position to make a judgment, you need to have choices. I don't say this in a malicious way, but the sad fact is that neither you nor the majority of your DR colleagues have the basic electronic skills that would enable you to troubleshoot this board, as the OP has done (I refer you to a recent thread where you advised the OP to replace a damaged PCB when the most expedient solution was to remove a shorted TVS diode and replace a burnt inductor with a wire link). To suggest that blindly desoldering an entire NAND flash array is preferable to replacing three 8-pin PWM controllers costing a total of US$5 is absurd in the extreme. The only reason that anyone would do this is if they didn't have the knowhow to do it any other way. In any case the latter approach was the ONLY one that was open to the OP, given his budget and the fact that his data were not important. BTW, repairing power supply faults is one of the easiest jobs that any technician has to tackle, so this job was not particularly difficult. The fact that it came to a dead end was just bad luck, not bad judgment.
As for your observation regarding my apparent hostility toward the DR profession, you first need to understand what this forum was like when I joined 2 years ago. At that time despairing visitors were derided and their DIY failures mercilessly ridiculed. My own initiation was similarly unpleasant. To give you a picture of what things were like, and to understand why my experiences left me with a sore that just won't heal, you may like to read the following thread:
what-the-circled-component-t13898.html
The OP in that thread is shotgunning a dead PCB by using his multimeter to compare the resistances of each and every component on a good board against the corresponding component on his bad board. In the end he arrives at the nonsensical conclusion that both his shock sensors test funny. I offered the [correct] explanation that the fault was in fact a short on the supply rail of the adjacent op-amps, and that the meter was seeing this short via the diodes on the inputs of the op-amp. I did so without any fanfare or chest beating, and I was polite and matter-of-fact about it. I even drew a diagram (which was mangled by the forum's HTML engine). For this I was abused by none other than BlackST. Needless to say, the OP did not thank me for solving his problem. In any other forum, doing so would be common courtesy.
Hopefully that should put things in perspective for you.
April 8th, 2012, 9:37
April 8th, 2012, 10:01
BlackST wrote:@Amarbir,
when the controller becomes hot as hell at power on, according to you, is just matter of soldering ?
If you had really damaged USB drives or SSD - electrical problem - you should know (no, a USB connector or a simple X doesn't count , I mean real damage) .
April 8th, 2012, 17:34
fzabkar wrote:@northwind, in order to be in a position to make a judgment, you need to have choices. I don't say this in a malicious way, but the sad fact is that neither you nor the majority of your DR colleagues have the basic electronic skills that would enable you to troubleshoot this board, as the OP has done (I refer you to a recent thread where you advised the OP to replace a damaged PCB when the most expedient solution was to remove a shorted TVS diode and replace a burnt inductor with a wire link). To suggest that blindly desoldering an entire NAND flash array is preferable to replacing three 8-pin PWM controllers costing a total of US$5 is absurd in the extreme. The only reason that anyone would do this is if they didn't have the knowhow to do it any other way. In any case the latter approach was the ONLY one that was open to the OP, given his budget and the fact that his data were not important. BTW, repairing power supply faults is one of the easiest jobs that any technician has to tackle, so this job was not particularly difficult. The fact that it came to a dead end was just bad luck, not bad judgment.
As for your observation regarding my apparent hostility toward the DR profession, you first need to understand what this forum was like when I joined 2 years ago. At that time despairing visitors were derided and their DIY failures mercilessly ridiculed. My own initiation was similarly unpleasant. To give you a picture of what things were like, and to understand why my experiences left me with a sore that just won't heal, you may like to read the following thread:
what-the-circled-component-t13898.html
The OP in that thread is shotgunning a dead PCB by using his multimeter to compare the resistances of each and every component on a good board against the corresponding component on his bad board. In the end he arrives at the nonsensical conclusion that both his shock sensors test funny. I offered the [correct] explanation that the fault was in fact a short on the supply rail of the adjacent op-amps, and that the meter was seeing this short via the diodes on the inputs of the op-amp. I did so without any fanfare or chest beating, and I was polite and matter-of-fact about it. I even drew a diagram (which was mangled by the forum's HTML engine). For this I was abused by none other than BlackST. Needless to say, the OP did not thank me for solving his problem. In any other forum, doing so would be common courtesy.
Hopefully that should put things in perspective for you.
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