- Panne - 1 Update
- Analog - Digital TV question - 4 Updates
- How do you recycle solar panels? - 5 Updates
- How to fix the goo that occurs on some electronic enclosures? - 9 Updates
- What do you guys use for chassis wiring on old tube gear? - 5 Updates
- LiIon charger ct (correction: NiCad) - 1 Update
Look165 <look165@numericable.fr>: Apr 17 02:19PM +0200 J'i une Télé LG 32LF630V qui me lâche. Ecran hyper sombre et baisse de son. Quelqu'un a une idée ? |
amdx <nojunk@knology.net>: Apr 16 09:04PM -0500 On 4/15/2019 9:12 PM, Fox's Mercantile wrote: >> accomplishments. >> Mikek > None of them. Now, you, "are just being evil and anally retentive." :-) Mikek PS, How come you don't think the countries in NATO should pay their bill? Aren't you happy that most Americans are doing better in the improved economy? Isn't it a good thing that Rocket man is not send up rockets for further testing? Do you really think we should just allow illegals to cross the boarder unchecked? Are you really against Targeting MS-13? Ok, no need to answer, with an answer like "None of them" you are just anti Trump, it no longer matters what you want, or what is right, if Trump is for it, you are against it. You lack the grey matter to make your own decision. Sorry, please rethink how you decide right and wrong, good and bad, it has nothing to do with who is in office. Mikek |
amdx <nojunk@knology.net>: Apr 16 09:10PM -0500 > Altec Lansing is some of the tops in electronics. I have one of their > commercial power amps. > But I imagine you paid dearly for those speakers. Somebody did! I bought them at a church sale, cheap, years ago. OH, and just this weekend I bought a Pristine Sangean ATS-818 radio for $1 including manual and a wall wart power supply. Easily worth $80 to $100, $199 whaen it was new. |
Fox's Mercantile <jdangus@att.net>: Apr 16 09:45PM -0500 On 4/16/19 9:04 PM, amdx wrote: > Sorry, please rethink how you decide right and wrong, good and bad, > it has nothing to do with who is in office. > Mikek Apparently you can only parrot Fox News talking points. Come back when YOU can think for yourself. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
amdx <nojunk@knology.net>: Apr 17 07:15AM -0500 On 4/16/2019 9:45 PM, Fox's Mercantile wrote: > Apparently you can only parrot Fox News talking points. > Come back when YOU can think for yourself. None of what I wrote came from Fox News, in fact 70% of the points I wrote came from a liberal writing the good things Trump has done, he listed 12 more positive points, but then when on to say he still wants Trump impeached. > https://www.usatoday.com/story/opinion/2018/09/12/donald-trump-impeachment-welcome-but-hes-done-20-things-right-column/1258575002/ At least this lib can see past his ideological leaning. Mikek |
"pfjw@aol.com" <peterwieck33@gmail.com>: Apr 16 10:40AM -0700 On Monday, April 15, 2019 at 4:55:21 PM UTC-4, Michael Terrell wrote: > Have any of you lived really close to a nuclear power plant? There was a 20MW facility across the street from my barracks at Ft. Greely, Alaska. It was supposed to be either the first, or one of the first that was tied into a power grid. > It had no cooling towers. Instead, they pumped the used cooling water back into the ground, less than 500 feet from the wells that supplied our drinking water. > People who lived and worked there are reporting Thyroid cancer. It was shut down when I arrived. They had gone back to using diesil powered generators, because the experimental facility was so unreliable. The control room was filled with concrete, to seal it off after it was decommissioned. We are in the 10-mile radius of Berwick Nuclear at our summer house - when the wind is blowing in the right direction we see the plume from the cooling towers. And when they test the sirens, we do sit up and take notice. We are about 35 miles from Limerick at home. Peter Wieck Melrose Park, PA |
"Mr. Man-wai Chang" <toylet.toylet@gmail.com>: Apr 17 12:10AM +0800 On 4/16/2019 2:54 AM, Filip454 wrote: >> How do you recycle solar panels? Without any pollution? > You spray them into the atmosphere :) Send them all to the Sun using Falcon Heavy? :) -- @~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!! / v \ Simplicity is Beauty! /( _ )\ May the Force and farces be with you! ^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3 ¤£É¶U! ¤£¶BÄF! ¤£½ä¿ú! ¤£´©¥æ! ¤£¥´¥æ! ¤£¥´§T! ¤£¦Û±þ! ¤£¨D¯«! ½Ð¦Ò¼{ºî´© (CSSA): http://www.swd.gov.hk/tc/index/site_pubsvc/page_socsecu/sub_addressesa |
Bob F <bobnospam@gmail.com>: Apr 16 08:00PM -0700 On 4/13/2019 6:56 AM, Mr. Man-wai Chang wrote: > How do you recycle solar panels? Without any pollution? You post them as free on Craigslist or freecycle, and they go away in minutes. |
"pfjw@aol.com" <peterwieck33@gmail.com>: Apr 17 04:28AM -0700 On Tuesday, April 16, 2019 at 11:00:38 PM UTC-4, Bob F wrote: > > How do you recycle solar panels? Without any pollution? > You post them as free on Craigslist or freecycle, and they go away in > minutes. A perfect definition of "Elsewhere Pollution". Peter Wieck Melrose Park, PA |
"Mr. Man-wai Chang" <toylet.toylet@gmail.com>: Apr 17 08:00PM +0800 On 4/17/2019 11:00 AM, Bob F wrote: >> How do you recycle solar panels? Without any pollution? > You post them as free on Craigslist or freecycle, and they go away in > minutes. Do you need the influence of US Army, US Navy and US Air Force to push them into other countries? :) -- @~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!! / v \ Simplicity is Beauty! /( _ )\ May the Force and farces be with you! ^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3 ¤£É¶U! ¤£¶BÄF! ¤£½ä¿ú! ¤£´©¥æ! ¤£¥´¥æ! ¤£¥´§T! ¤£¦Û±þ! ¤£¨D¯«! ½Ð¦Ò¼{ºî´© (CSSA): http://www.swd.gov.hk/tc/index/site_pubsvc/page_socsecu/sub_addressesa |
three_jeeps <jjhudak@gmail.com>: Apr 16 10:56AM -0700 I am an EE, not a chemist so I am looking for a solution to this issue. I have a few electronic devices such as Foscam PTZ network camera and a Targus slide clicker, both of which have this issue. The black case of these devices seems to have suffered a breakdown of the surface of the enclosure that results in a very sticky feel along with the disappearance of some of the lettering on the buttons, case, etc. They haven't been exposed to a lot of sunlight, temp extremes, chemicals of any sort, etc. The sticky substance seems to be only on the exposed outside surfaces. I have tried to remove/stabilize the stickyness with: alcohol (isopropal, ethel, methel), acetone, MEK, mineral spirits, carbon-tet, even tried the dreaded (in my book) WD40. Nothing helped. I know that some of these chemicals might soften certain types of plastics, but I figured what the hell.... Nothing has fixed the problem, and I hate to toss this stuff. Actually I am more interested in what the problem is and a cure for it - if any. Thanks John |
"pfjw@aol.com" <peterwieck33@gmail.com>: Apr 16 11:04AM -0700 Does it smell slightly sweet? Does it smell at all? Peter Wieck Melrose Park, PA |
Adrian Caspersz <email@here.invalid>: Apr 16 07:15PM +0100 On 16/04/2019 18:56, three_jeeps wrote: > The sticky substance seems to be only on the exposed outside surfaces. > I have tried to remove/stabilize the stickyness with: alcohol (isopropal, ethel, methel), acetone, MEK, mineral spirits, carbon-tet, even tried the dreaded (in my book) WD40. Nothing helped. I know that some of these chemicals might soften certain types of plastics, but I figured what the hell.... > Nothing has fixed the problem, and I hate to toss this stuff. Actually I am more interested in what the problem is and a cure for it - if any. This goo issue is coming up quite regularly with the rubberised coating applied to plastics for various type of consumer, DIY and computing equipment. I'd heard stories of success with Car Brake fluid. -- Adrian C |
mjb@signal11.invalid (Mike): Apr 16 07:30PM +0100 In article <2a76999c-d771-44a0-b7a3-37ccd91bc138@googlegroups.com>, > The black case of these= > devices seems to have suffered a breakdown of the surface of the enclosure Was the device originally a matt/rubberised finish of some kind, rather than smooth (or textured-moulded) plastic? I have a Topfield "Black Panther" model PVR that has a plastic front, which was "enhanced" with some kind of matt coating. Over time, it became sticky, as you say it hasn't ... > been exposed to a lot of sunlight, temp extremes, chemicals of= > any sort, etc. ... so it seems to be a natural failure of the coating with time. >I have tried to remove/stabilize the stickyness with: alcohol (isopropal, In the end, I did manage to clean it off, but it took a lot of work with isopropanol -- it appears to be doing very little, but persistence paid off. > acetone, MEK ... may eat the plastic underneath too, so use with care. -- --------------------------------------+------------------------------------ Mike Brown: mjb[-at-]signal11.org.uk | http://www.signal11.org.uk |
John-Del <ohger1s@gmail.com>: Apr 16 12:01PM -0700 On Tuesday, April 16, 2019 at 1:56:07 PM UTC-4, three_jeeps wrote: > Nothing has fixed the problem, and I hate to toss this stuff. Actually I am more interested in what the problem is and a cure for it - if any. > Thanks > John There's no cure as far as I know. The plastic itself is depolymerizing with age. I've seen modern plastics go gooey and others become brittle as crackers. You can try abrading what's left of the surface and coating it with a barrier - like paint perhaps. Maybe depriving it of air as well as light will slow the decomposition down. |
tabbypurr@gmail.com: Apr 16 02:43PM -0700 On Tuesday, 16 April 2019 18:56:07 UTC+1, three_jeeps wrote: > Nothing has fixed the problem, and I hate to toss this stuff. Actually I am more interested in what the problem is and a cure for it - if any. > Thanks > John No solution that we know of. Talc or cornstarch provides a temporary bodge. Several solvents can remove it but it's very slow going. Brake fluid has been recommended as one of the best. Heatshrink sleeving it is another option, or perhaps tape. NT |
N_Cook <diverse@tcp.co.uk>: Apr 17 09:03AM +0100 >> John > No solution that we know of. Talc or cornstarch provides a temporary bodge. Several solvents can remove it but it's very slow going. Brake fluid has been recommended as one of the best. Heatshrink sleeving it is another option, or perhaps tape. > NT Is it the same breakdown process of the perishing of old rubber drive bands in cassette recorders/VCRs? Sometimes go hard and brittle ,sometimes "melt" to a horrible black goo. I'll try brake-fluid , the next time I have to clean off the remnants of such a gooey ex-drive band. Incidently if you have a box of spare rubber drive bands, pour loads of talc in there. Even if it doesn't stop a band perishing, it isolates it to just the one band , rather than the contagion affecting a number of them. |
N_Cook <diverse@tcp.co.uk>: Apr 17 12:17PM +0100 > Does it smell at all? > Peter Wieck > Melrose Park, PA If it smelt of vinegar, then possibly "dolls disease" breakdown of old PVC/Vinyl , the soft plastic as used to make dolls. |
N_Cook <diverse@tcp.co.uk>: Apr 17 12:28PM +0100 On 17/04/2019 12:17, N_Cook wrote: >> Melrose Park, PA > If it smelt of vinegar, then possibly "dolls disease" breakdown of old > PVC/Vinyl , the soft plastic as used to make dolls. Since the last time of googling dolls disease, this informative piece has emerged, as 1996 presumably they're creating an online archive <https://www.newscientist.com/article/mg15020282-700-technology-sad-doll-disease-ends-in-tears/> the infectious nature sounds like what happens in vcr/cassette players, where when one rubber band goes gooey , others start to go gooey although not in direct contact. |
three_jeeps <jjhudak@gmail.com>: Apr 16 11:24AM -0700 > lot of tube gear. > Personally, I cant see that thick insulation failing at 500v or so, but > it is a concern. MTW is a good choice. Some other options include: TEW (often synonymous with MTW), but also THHN and THWN. Back in the day when I was involved in designing control panels for industrial process control, these were the defaults. You can google the meanings and differences. We used different wire types based on if the panels needed to be UL approved and environmental constraints, etc. For most tube gear, (unless it is going on a sea vehicle) these wire types should be OK. The standard for us was 600V insulation. Beware of buying wire on ebay (and other places such as home depot, etc)...most of the wire is copper clad aluminum which, IMHO, should be avoided. Pain to solder, does not make a good crimp connection. (given this group, I am sure someone will wanna go to the mat on this point...lol. To each their own) John |
three_jeeps <jjhudak@gmail.com>: Apr 16 11:29AM -0700 > lot of tube gear. > Personally, I cant see that thick insulation failing at 500v or so, but > it is a concern. Alpha and Belden are good mfg of wire (as noted earlier). Also, check out Carol Cable. I consider these three to be of the best wire/cable quality. |
Spare Change <noncompliant@notcompliant.zgq>: Apr 16 01:12PM -0700 On Apr 16, 2019, three_jeeps wrote > (given this group, I am sure someone will wanna go to the mat on this > point...lol. To each their own) > John I bought a mains cable that would be attracted by a magnet. Iron wire is one of China's latest cheap modes. |
Spare Change <noncompliant@notcompliant.zgq>: Apr 16 01:14PM -0700 On Apr 16, 2019, Michael Terrell wrote > nylon overjacket, like I used for commercial fire alarms. It is not suitable > for point to point wiring on a chassis, unless you are not capable of doing > anything right. Look at MTW or TEW. It's not THHN. THHN has fewer strands and has the clear jacket over the poly insulation that makes it a BEAR to use in tight spaces. THe clear jacket is to provide extra protection when pulling through conduit and those wonderful pull "els". |
three_jeeps <jjhudak@gmail.com>: Apr 16 01:18PM -0700 On Tuesday, April 16, 2019 at 4:12:10 PM UTC-4, Spare Change wrote: > > John > I bought a mains cable that would be attracted by a magnet. Iron wire is one > of China's latest cheap modes. Wonderful, I wonder who is responsible for letting this junk in? We used to have standards that were applied at some higher level, but they are being undermined and ultimately the end user has to be very well aware of the product details. Personally, if not easily found in 1-2 mouse clicks, it is off my list...lol |
Jeff Liebermann <jeffl@cruzio.com>: Apr 16 10:17AM -0700 On Tue, 16 Apr 2019 16:35:09 +1000, Lucifer >>get just about any power tool with LiIon battery power. >You say you have a modest collection of DeWalt cordless >tools that run on LiIon batteries, but you don't own one (yet). Sorry. My sloppy editing. When I originally wrote that paragraph, I included mention of a DeWalt 60v LiIon powered electric chain saw that I was interested purchasing. It's powerful and very quiet. However, when I deleted the mention of the electric chainsaw, I neglected to also delete my comment that I don't currently own one. I do have two fairly new DeWalt DCD710 12v LiIon cordless drills. I use them quite often. These use brush type motors, which are not as good as brushless motors. I burned out one motor ($25 replacement cost). The brushes are sealed inside the motor and are not replaceable. If I had to do it again, I probably would have bought the larger DCD777 20v model instead, which uses a brushless motor. <https://www.dewalt.com/products/power-tools/shop-by-cordless-platform/20v> -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 25 updates in 6 topics"
Post a Comment