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Cursitor Doom <curd@notformail.com>: Nov 12 11:07PM On Sat, 12 Nov 2016 16:56:21 -0500, M Philbrook wrote:   > wash off the surface? Something like s Silver turnish remover?   > Would a peroxide and white vinegar do something for me?   > Jamie   X-posted to a more appropriate forum.

ohger1s@gmail.com: Nov 13 05:21AM -0800 On Saturday, November 12, 2016 at 6:08:10 PM UTC-5, Cursitor Doom wrote:   > > Would a peroxide and white vinegar do something for me?   > > Jamie   > X-posted to a more appropriate forum.     In the last couple of years I have become addicted to wiping down anything I put the soldering iron to with liquid flux. Solder Wick becomes much more effective and less heat is needed. The only time I don't is if I'm using a vacuum iron because it gums up the works.

Jon Elson <elson@pico-systems.com>: Nov 12 01:43PM -0600 N_Cook wrote:   > Just some staining of the pins , no obvious failed copper tracks and > very little green corrossion product. I've not determined yet whether > multilayer pcb. If it is all low voltage inside, then maybe a good cleaning of both sides of the board with alcohol and a toothbrush might clean it up enough to work.   One problem with situations like this is that the PC board can be cleaned up well, but the pushbuttons, pots and such may not be easy to clean. And, they may continue to deteriorate even after you finish with it.   Jon

N_Cook <diverse@tcp.co.uk>: Nov 12 08:10PM On 12/11/2016 19:43, Jon Elson wrote: > well, but the pushbuttons, pots and such may not be easy to clean. And, > they may continue to deteriorate even after you finish with it.   > Jon   There is 48V supply which may be active all the time , as far as the ps, only switched in by user. Luckily the controls section of the upper board and the DSP and memory section of the main pcb seem to be unaffected. Unfortunately the owner only gets on with the options available on this particular model, but he never obyained a spare , depite being such a major piece of kit for his act.

"Gareth Magennis" <soundserviceleeds@outlook.com>: Nov 12 08:20PM "N_Cook" wrote in message news:o06tj2$e68$1@dont-email.me...   I have to decide how much time to spend on this Vocalist live3, DSP harmoniser, indoors but ended up directly underneath a rainfall gully leak of the house roof. Instead of opening up and hairdrying, owner just put on a room radiator overnight before powering up, via external 9V ac wall wart. I have to decide how much time to spend on this. If there is no corrossion product, mainly white stuff like battery corrossion product or "tide-mark", anywhere in the DSP area does that mean water did not get there? No front panel LEDs or sw responses, main 7805 v reg is ok and one SMD LED on the pcb lit. No fuses/CPs found. I can find no schematic for this. There was still water inside this kit when I got it. Obvious corrossion product lightly brushed off easily, from around pins of stuff in the internal ps area, would it be tin salts, tin carbonate or some such ? Just some staining of the pins , no obvious failed copper tracks and very little green corrossion product. I've not determined yet whether multilayer pcb.                 My policy on such matters is that the equipment can NEVER now be relied on. It is damaged, and may fail as a result any time soon, despite any remedies you are charging the customer for.   You cannot see under the IC's, who knows what has collected there to wreak havoc later.     If this is used in a studio, then sudden failure is perhaps not game over. In a live situation, well, you really don't want that at all.       Gareth.

N_Cook <diverse@tcp.co.uk>: Nov 12 09:27PM On 12/11/2016 20:20, Gareth Magennis wrote:   > Gareth.   Valid point, a use for my 60 yearold reel of 0.08mm rigid-for-its diameter tungsten wire , a short length "rodded" through under the SO23 pins and the 1 8pin SOIC, probably a dual powerfet device, hopefully the only afected active devices.

"Gareth Magennis" <soundserviceleeds@outlook.com>: Nov 12 10:24PM "N_Cook" wrote in message news:o081f1$d9s$1@dont-email.me...   On 12/11/2016 20:20, Gareth Magennis wrote:   > Gareth.   Valid point, a use for my 60 yearold reel of 0.08mm rigid-for-its diameter tungsten wire , a short length "rodded" through under the SO23 pins and the 1 8pin SOIC, probably a dual powerfet device, hopefully the only afected active devices.                   Yep, so anything you do is basically going to be a Punt. The customer has to be happy he is paying for "hope".   I would not be able to guarantee my work under these circumstances and would have to charge accordingly, or not at all.       Cheers,     Gareth.

Tim Schwartz <tim@bristolnj.com>: Nov 13 06:44AM -0500 On 11/12/2016 6:15 AM, N_Cook wrote: > Just some staining of the pins , no obvious failed copper tracks and > very little green corrossion product. I've not determined yet whether > multilayer pcb.     Having read the thread, I look on line and found several used ones for sale, including a nice looking one in the original box for US$175. That's considerably less than 3 hours labor here, so I'd suggest the customer look for nice a used one.   Regards, Tim

Adrian Caspersz <email@here.invalid>: Nov 12 05:54PM On 10/11/16 23:24, jurb6006@gmail.com wrote:   <snip>   There is > money into that as well and it is not a really good idea. It is one > hell of a novelty, as this is and if you got the money honey, go for > it. Impress your friends and enemies as well.   You possibly mean this one.   The Gramovox Vertical Turntable - REVIEW https://www.youtube.com/watch?v=kvcoci3QLEk   It's mad.   -- Adrian C

micky <NONONOmisc07@bigfoot.com>: Nov 12 01:44PM -0500 In sci.electronics.repair, on Sat, 12 Nov 2016 13:05:48 +0000 (UTC),   >> I'm sure a vertical turntable was marketed decades ago. I don't remember >> the supposed advantage, though...   >I still own and use one, a Mitsubishi LT-5V.   I see one sold on ebay last year for 450.

micky <NONONOmisc07@bigfoot.com>: Nov 12 07:46PM -0500 In sci.electronics.repair, on Fri, 11 Nov 2016 23:34:16 -0800 (PST),   >> Parts of the video looked to me someone [somewhat] like it was an animation.   >** I had the same feeling, close-ups of the patter and PU looked like CGI.   >The Mag-Lev company is based in Slovenia - so likely immune from consumer fraud litigation and operating only over the net is such a warning.   No wonder they *all* had Slovenic (?) names.   >If it is somehow for real, the dudes have gone to considerable trouble to make it look FAKE.   Good point. Okay, that's 50,000 dollars I can use for something else.

Phil Allison <pallison49@gmail.com>: Nov 12 11:08PM -0800 micky wrote:     > >The Mag-Lev company is based in Slovenia - so likely immune from consumer fraud litigation and operating only over the net is such a warning.   > >If it is somehow for real, the dudes have gone to considerable trouble to make it look FAKE.   > Good point. Okay, that's 50,000 dollars I can use for something else.   ** You can find vids on the net from independent people - showing a Mag-Lev TT working. It really does float 50mm above the base and it really does spin at a pretty steady pace.   There is some serious cleverness going on here.     .... Phil

Jeff Liebermann <jeffl@cruzio.com>: Nov 12 10:31AM -0800 On Sat, 12 Nov 2016 06:32:48 -0500, "Michael A. Terrell"   ><http://www.blondertongue.com/UserFiles/file/documents/2012%20BRG%20FINAL_lo-res.pdf>   Thanks, but the 2014 version is more current: <http://www.blondertongue.com/UserFiles/file/Marketing%20Literature/2014_BRG_lo-res.pdf> Other documents and catalogs might be of interest: <http://www.blondertongue.com/about/request_a_catalog.aspx>   -- 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

"Michael A. Terrell" <mike.terrell@earthlink.net>: Nov 12 11:25PM -0500 Jeff Liebermann wrote: > On Sat, 12 Nov 2016 06:32:48 -0500, "Michael A. Terrell" > <mike.terrell@earthlink.net> wrote:   >> <http://www.blondertongue.com/UserFiles/file/documents/2012%20BRG%20FINAL_lo-res.pdf>     I have several other dates archived, as well. Sometimes you need the older information for existing systems.     > <http://www.blondertongue.com/UserFiles/file/Marketing%20Literature/2014_BRG_lo-res.pdf> > Other documents and catalogs might be of interest: > <http://www.blondertongue.com/about/request_a_catalog.aspx>     Several other companies had useful publications, but the slow conversion to Fiber Aided CATV killed them off.     -- Never piss off an Engineer!   They don't get mad.   They don't get even.   They go for over unity! ;-)

Jeff Liebermann <jeffl@cruzio.com>: Nov 12 09:07PM -0800 On Sat, 12 Nov 2016 23:25:15 -0500, "Michael A. Terrell"   >>> <http://www.blondertongue.com/UserFiles/file/documents/2012%20BRG%20FINAL_lo-res.pdf>   > I have several other dates archived, as well. Sometimes you need the >older information for existing systems.   Good point (after I erased the 2012 version from my machine). I did some Googling and found the 2008 version of the Blonder Tongue guide at: <https://www.sateng.com/downloads/btbroadbandrefguide.pdf> After a quick glance, it seems to have quite a bit on antenna systems, which are not used very much these days thanks to fiber and satellite backhauls.   Also, the 2009 version at: <http://www.blondertongue.com/UserFiles/file/documents/2009%20BBand%20Ref%20Guide.pdf>   >> <http://www.blondertongue.com/about/request_a_catalog.aspx>   > Several other companies had useful publications, but the slow >conversion to Fiber Aided CATV killed them off.   The Motorola (now Arris) 2014 guide is what I like to use: <https://www.arris.com/globalassets/resources/other/cable_technology_pocket_guide.pdf> (6MB) 302 pages.     -- 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

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