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MowCowWhoHow III

(2,103 posts)
Mon Oct 10, 2016, 06:31 PM Oct 2016

Samsung to halt sales of Galaxy Note 7

Source: BBC

Samsung says it will stop all sales of its Galaxy Note 7 after new reports of repaired devices catching fire.

The company also told owners to stop using it and power it down while it investigated the fault.

"We are working with relevant regulatory bodies to investigate the recently reported cases involving the Galaxy Note 7," the company said in a statement.

There have been at least two reports of replaced devices catching fire.

Read more: http://www.bbc.co.uk/news/business-37614770



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csziggy

(34,136 posts)
2. I'm waiting to see if this is industrial espionage like the bad capacitors in computers were
Mon Oct 10, 2016, 06:44 PM
Oct 2016

I had a motherboard go bad because of bad capacitors. It turned out that the series of computer failures related to that fault were because of sloppy industrial espionage. A company stole the procedure for making capacitors but left out a step that made them stable. After a couple of years of use the capacitors would swell and leak causing whatever electronics they were used on to fail.

Capacitor plague
From Wikipedia, the free encyclopedia


Failed aluminum electrolytic capacitors with open vents in the top of the can, and visible dried electrolyte residue (reddish-brown color)

The capacitor plague was a problem related to a higher-than-expected failure rate of non-solid aluminum electrolytic capacitors, between 1999 and 2007, especially those from some Taiwanese manufacturers,[1][2] due to faulty electrolyte composition that caused corrosion accompanied by gas generation, often rupturing the case of the capacitor from the build-up of pressure.
https://en.wikipedia.org/wiki/Capacitor_plague

<SNIP>

Industrial espionage implicated

Industrial espionage was implicated in the capacitor plague, in connection with the theft of an electrolyte formula. A materials scientist working for Rubycon in Japan left the company, taking the secret water-based electrolyte formula for Rubycon's ZA and ZL series capacitors, and began working for a Chinese company. The scientist then developed a copy of this electrolyte. Then, some staff members who defected from the Chinese company copied an incomplete version of the formula and began to market it to many of the aluminium electrolytic manufacturers in Taiwan, undercutting the prices of the Japanese manufacturers.[1][42] This incomplete electrolyte lacked important proprietary ingredients which were essential to the long-term stability of the capacitors[4][23] and was unstable when packaged in a finished aluminum capacitor. This faulty electrolyte allowed the unimpeded formation of hydroxide and produced hydrogen gas.[34]

There are no known public court proceedings related to alleged theft of electrolyte formulas. However, one independent laboratory analysis of defective capacitors has shown that many of the premature failures appear to be associated with high water content and missing inhibitors in the electrolyte, as described below.
https://en.wikipedia.org/wiki/Capacitor_plague#Industrial_espionage_implicated


It cost Dell millions of dollars to replace computers that had failed to this problem My motherboard was an Asus, a very well respected manufacturer of motherboards and computer components.

I would not be surprised to find that the battery problem is the result of either sloppy manufacturing standards or of stolen procedures that are not being followed completely (essentially the same thing).

MicaelS

(8,747 posts)
7. It has to be the battery, since
Mon Oct 10, 2016, 07:11 PM
Oct 2016

Phones not even connected to charging have burned up.

There could be bad circuit boards or regulators in the battery, or the the Li-on itself it contaminated or the cell packaging has micro punctures.

I am willing to bet it is sloppy standards, or cutting concerns to get the phone to market. I am also beginning to wonder if Samsung knows WTF is going on.

csziggy

(34,136 posts)
9. I don't think it's the capacitors - but some bad manufacturing of the batteries
Mon Oct 10, 2016, 07:51 PM
Oct 2016

Or the battery circuits.

All it took for the capacitors to go bad was missing one step in the electrolyte production. I don't know enough about battery manufacturing to guess what the problem might be but obviously something is very wrong.

seltzerwater

(53 posts)
11. YUP... I was a Desktop tech back then
Mon Oct 10, 2016, 09:03 PM
Oct 2016

I remember replacing about 100 motherboards at a small hospital, and the bank I worked at before the hospital.
I hated Dell for a long time. (those gawd damn GX-270 slim cases were trash)

csziggy

(34,136 posts)
12. I had an Asus mobo based computer I had built from scratch
Mon Oct 10, 2016, 09:44 PM
Oct 2016

The thing was not reliable from day one so it was really fortunate that I had used a new case and kept my old computer. I reloaded Windows 2000 many times, put a new hard drive into it, replaced many other parts and it never would run without errors.

When I replaced the RAM I noticed the leaking capacitors and realized what had been happening. Because I was going in for shoulder surgery and would not have the use of my right arm for a month, I took into a friend's computer shop. He replaced the mobo and it still wouldn't run right so he replaced the power supply. Out of curiosity he opened the old power supply - the capacitors in it were also swollen a leaking orange stuff. Because I had bought the case from him new, he managed to get a refund which covered his labor so all I had to do was pay for the new motherboard.

I still have that computer upstairs in the attic. It still runs, but the technology is now very old. The computer I am using now was assembled for me by my friend though I bought the parts from NewEgg.com. I got a new case - that old was was huge to carry enough hard drives to store my digital photos. Now I have 3TB and a 4TB drives for data storage, a 1TB drive with solid state buffer for the OS and a 128GB SSD for my PhotoShop scratch disk so I don't need as many drives to do what I need.

cynatnite

(31,011 posts)
13. So, I got one about 2 weeks after it was released...
Mon Oct 10, 2016, 09:52 PM
Oct 2016

Still had my S6 so I turned it in and got my money back.

I was called later and told they had fixed the issue. So, I went back and got another one. I went ahead and sold the S6 back to them thinking that they solved the issue.

Then I get this shit in my email tonight. On top of that, they're saying shut off the phone now.

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