Re: red SATA cables "notoriously bad"? (Was Re: Orphaned Inode Problem)
On Dienstag, 20. Februar 2024 06:58:31 -03 Eike Lantzsch ZP5CGE / KY4PZ wrote: > On Montag, 19. Februar 2024 21:48:52 -03 Andy Smith wrote: > > Hi, > > > > On Mon, Feb 19, 2024 at 04:12:44PM -0300, Eike Lantzsch ZP5CGE / > > KY4PZ > wrote: > > > The notorious red SATA cables - I threw them out long ago. The red > > > pigment eats up the fine copper threads, changing the impedance of > > > the cable and eventually making false contact before failing > > > completely. > > > > I've never heard of this. I did a bit of searching around and all I > > can find is assertions that cable colour doesn't matter for SATA. I > > can't seem to find anything about red pigment damaging the copper. > > Have you got a reference so I can learn more? > > > > Thanks, > > Andy > > Experience ... > "notoriously bad" on my work bench. > Audio cables, SATA cables, even red cables of 1.5mm2 upwards. The > corrosion can be seen although it takes decades for the thicker cables > to deteriorate. > It very much depends on where the cables have been manufactured. > Never had problems with European made or US made telephone cables with > wires with red sheeths. But copper cable manufacturing has been > outsourced to Asia (and Argentina - Pirelli but those are good) many > decades ago. If you open the sheeth of the red SATA cable, you will see that at least three wires have no extra sheeth but are directly embedded into the red plastic. 4 are shielded. So I guess that those wires are not affected. There is one naked wire in the middle and two to the right and left. -- Eike Lantzsch KY4PZ / ZP5CGE
Re: red SATA cables "notoriously bad"? (Was Re: Orphaned Inode Problem)
On Montag, 19. Februar 2024 21:48:52 -03 Andy Smith wrote: > Hi, > > On Mon, Feb 19, 2024 at 04:12:44PM -0300, Eike Lantzsch ZP5CGE / KY4PZ wrote: > > The notorious red SATA cables - I threw them out long ago. The red > > pigment eats up the fine copper threads, changing the impedance of > > the cable and eventually making false contact before failing > > completely. > I've never heard of this. I did a bit of searching around and all I > can find is assertions that cable colour doesn't matter for SATA. I > can't seem to find anything about red pigment damaging the copper. > Have you got a reference so I can learn more? > > Thanks, > Andy Experience ... "notoriously bad" on my work bench. Audio cables, SATA cables, even red cables of 1.5mm2 upwards. The corrosion can be seen although it takes decades for the thicker cables to deteriorate. It very much depends on where the cables have been manufactured. Never had problems with European made or US made telephone cables with wires with red sheeths. But copper cable manufacturing has been outsourced to Asia (and Argentina - Pirelli but those are good) many decades ago. -- Eike Lantzsch KY4PZ / ZP5CGE
Re: red SATA cables "notoriously bad"? (Was Re: Orphaned Inode Problem)
On 20/2/24 08:48, Andy Smith wrote: Hi, On Mon, Feb 19, 2024 at 04:12:44PM -0300, Eike Lantzsch ZP5CGE / KY4PZ wrote: The notorious red SATA cables - I threw them out long ago. The red pigment eats up the fine copper threads, changing the impedance of the cable and eventually making false contact before failing completely. I've never heard of this. I did a bit of searching around and all I can find is assertions that cable colour doesn't matter for SATA. I can't seem to find anything about red pigment damaging the copper. Have you got a reference so I can learn more? I find it unlikely that the color of the outer sheath of a cable affects the conductors as they have their own individual sheaths usually of a different material to the sheath. It's possible that some manufacturer made cables with faulty individual insulation and their brand used a red outer sheath. In that case the color of the sheath correlates with faulty cables but is not the cause of the faulty cables.
Re: red SATA cables "notoriously bad"? (Was Re: Orphaned Inode Problem)
On 2/19/24 19:49, Andy Smith wrote: Hi, On Mon, Feb 19, 2024 at 04:12:44PM -0300, Eike Lantzsch ZP5CGE / KY4PZ wrote: The notorious red SATA cables - I threw them out long ago. The red pigment eats up the fine copper threads, changing the impedance of the cable and eventually making false contact before failing completely. I've never heard of this. I did a bit of searching around and all I can find is assertions that cable colour doesn't matter for SATA. I can't seem to find anything about red pigment damaging the copper. Have you got a reference so I can learn more? Thanks, Andy Andy, I am the source of that red cable story. Actually it is not technically a red but a magenta that fluoresces reddish to get that brightness. And my history with early failure of cables that used that dye to color the insulation goes back to the 1970's when the majority of the CB radios sold were from japan, not china. Microphone cables that included a push to talk start failing quite rapidly, The hot red wire was used for that about 99% of the time..Open up the plug or the microphone, the red wire had come unsoldered or broken off, attempt to strip it back to good wire wasn't possible. there was no good copper left anyplace in the cable. Cut an inch of it off where there should have been copper, grab it by the end with suture clamps and thump it with a pencil over white copy paper and shake the copper out of it as a reddish, face powder fine dust, the copper had been I assume made into copper oxide. It took every good tech in the country to start returning mike cables back to the makers as defective before they got the message that that die was poison. That took about 9 months before we could order replacement cable specifing that they would be returned for credit if we found any 'hot" red in the cables they were selling us. The shortage at the time forced them to ship whatever they had I guess. If you goto Loews or any electrical supply where they have to sell NEC approved cabling, you will NOT see that red on any wire on the shelf or in the rack. Then about the time sata came out, they found a new market for that plastic dye, and sure as heck, we had cabling problems out the yang in about 3 years. If you have that hot red wire anyplace in you computer, it will fail, order more cables. Tan, Black, Yellow, but not hot red. And sleep better knowing that time bomb has gone out with the trash. Cheers, Gene Heskett, CET. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis
red SATA cables "notoriously bad"? (Was Re: Orphaned Inode Problem)
Hi, On Mon, Feb 19, 2024 at 04:12:44PM -0300, Eike Lantzsch ZP5CGE / KY4PZ wrote: > The notorious red SATA cables - I threw them out long ago. The red > pigment eats up the fine copper threads, changing the impedance of the > cable and eventually making false contact before failing completely. I've never heard of this. I did a bit of searching around and all I can find is assertions that cable colour doesn't matter for SATA. I can't seem to find anything about red pigment damaging the copper. Have you got a reference so I can learn more? Thanks, Andy -- https://bitfolk.com/ -- No-nonsense VPS hosting
