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Reinhard Zwirner <reinhard.zwirner@t-online.de>: Feb 19 03:23PM +0100 John Robertson schrieb: > On 2018/02/17 12:06 PM, Reinhard Zwirner wrote:   [...]   > Actually the EverReady battery engineer I spoke to back in the late > 80s recommended white vinegar:water with a 50:50 ratio, not pure or > concentrated white vinegar.   My experience: concentrated white vinegar achieves best results. But YMMV ...   [...] > So be sure to identify the type of battery before attempting > corrective measures.   FACK!   Best regards   Reinhard

"~misfit~" <shaun.at.pukekohe@gmail.com>: Feb 19 04:41PM +1300 Once upon a time on usenet Jeff Liebermann wrote: > the area from the outside. The only way to get the crud out is to > tear it apart. > http://www.learnbydestroying.com/jeffl/pics/repair/HP%20Envy%20m6%20clogged%20fan/slides/clogged_fan.html   The HP envy that I have likewise must be stripped down to where the top and bottom shells are apart to clean the fan. This is what the fins looked like when I finally got there: http://test.internet-webmaster.de/upload/1519009591.jpg I was fully intending to cut a hole in the bottom case (and make a hinged door with tape) so I could access the fan / fins for the frequent cleaning it will require but the fan lifts out *upwards* and is half under the keyboard.   (In that picture the heatpipe that you can see is the one from the GPU that's already been past a smaller set of fins [out-of-shot to the right]. Behind that are the two heatpies that come directly from the 3GHz quad core i7 CPUs heat collector.)   > The bottom cover comes off exposing the entire heat pipe assembly, > which is then easily cleaned. Too bad Dell (or Foxcom) designed it > into a crappy machine (Inspiron 1525) with miserable BGA soldering.   I've not seen setups like that on recent machines. IMO manufacturers are using 'heatsink clog' combined with difficulty of disassembly / reassembly (with fragile plastic clips and ribbon cables) as a form of built-in obsolescence. After all CPUs and SSDs aren't becoming obsolete / underpowered as quickly as they once did...   > More later. Gotta run.   Cheers, -- Shaun.   "Humans will have advanced a long, long way when religious belief has a cozy little classification in the DSM*." David Melville (in r.a.s.f1) (*Diagnostic and Statistical Manual of Mental Disorders)

mike <ham789@netzero.net>: Feb 26 10:59AM -0800 >> There are so many variations of them too.   >> Someone must have some sort of gauge to measure them....   > I don't know how you'd measure after it went through a crimp-tool.   They make gauges, but you don't want to know how much they cost.   The hobby stores sell short lengths of brass tubing that are sized to nest. Buy a foot-long section of each of the smaller sizes. They make excellent gauges for measuring plugs/sockets. IN a pinch, two brass sections and some epoxy will make any size plug you want.

tabbypurr@gmail.com: Feb 26 11:21AM -0800 On Monday, 26 February 2018 14:00:58 UTC, Phil Hobbs wrote:   > Sharp calipers are okay for both.   > Cheers   > Phil Hobbs   calipers are good if the points are relatively sharp and they line up, neither was the case for the device linked to, nor is for most other cheapie vernier calipers.     NT

Fox's Mercantile <jdangus@att.net>: Feb 26 02:45PM -0600 > calipers are good if the points are relatively sharp and they > line up, neither was the case for the device linked to, nor > is for most other cheapie vernier calipers.     Sorry to hear you can't tell the difference between crap tools and ones that work. Or that you can't even get good tools to work.   -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

tabbypurr@gmail.com: Feb 26 02:17PM -0800 On Monday, 26 February 2018 20:45:51 UTC, Jeffrey Angus wrote:   > Sorry to hear you can't tell the difference between crap tools > and ones that work. > Or that you can't even get good tools to work.   sorry to hear you like to be childish

Fox's Mercantile <jdangus@att.net>: Feb 26 04:27PM -0600 >> and ones that work. >> Or that you can't even get good tools to work.   > sorry to hear you like to be childish   Sorry, I don't believe being accurate is childish.     -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>: Feb 26 08:06PM -0500 > calipers are good if the points are relatively sharp and they line > up, neither was the case for the device linked to, nor is for most > other cheapie vernier calipers.     I have a couple of Mitutoyo ones that work great and weren't expensive. Chinese ones are good for scribing circles on copper or aluminum and other such jobs that might hurt the good Japanese ones. ;)   Cheers   Phil Hobbs     -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510   http://electrooptical.net http://hobbs-eo.com

Fox's Mercantile <jdangus@att.net>: Feb 26 09:11PM -0600 On 2/26/18 7:06 PM, Phil Hobbs wrote: > other such jobs that might hurt the good Japanese ones. ;)   > Cheers   > Phil Hobbs   My vernier calipers are Mitutoyo. My Dial calipers are Starret.   I have a couple of the absolutey cheap plastic ones. Those are for telling the difference between English and Metric hardware in the "oh boy" bucket.     -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

bruce2bowser@gmail.com: Feb 26 07:51PM -0800 On Sunday, February 25, 2018 at 11:26:11 PM UTC-5, Phil Allison wrote:   > > > Someone must have some sort of gauge to measure them....   > > I don't know how you'd measure after it went through a crimp-tool.   > ** Huh ??   When you hook a coax connector to coax cable, you crimp it with a crimping device so it won't fall off of the coax cable. (at least I did)   As with every connector, if you crimp it at one end, its inevitably going to change measurement at the other end (though probably not significantly).

Ralph Mowery <rmowery28146@earthlink.net>: Feb 26 11:21PM -0500 In article <6597a1c9-c146-4e63-9596-92f6648b75a7@googlegroups.com>, bruce2bowser@gmail.com says...   > When you hook a coax connector to coax cable, you crimp it with a crimping device so it won't fall off of the coax cable. > (at least I did)   > As with every connector, if you crimp it at one end, its inevitably going to change measurement at the other end (though probably not significantly).   I think youall are mixing coax power connectors that are used on many wall cubes to power the electronic devices and the coax connectors like used on the antenna cable called coax, such as RG-8, RG-6.   The mating areas of the coax power connector are not crimped or any other thing to change the mating dementions.

Fox's Mercantile <jdangus@att.net>: Feb 26 10:25PM -0600 > As with every connector, if you crimp it at one end, its inevitably > going to change measurement at the other end (though probably not > significantly).   You're thinking of RF coaxial connectors. Aside from the fact the don't change at the mating side of the connector.   Almost coaxial power connectors have solder terminals on the wire side and they don't change shape either at the connection/interface side.   The center terminal may drift in position if you overheat the connect during assembly/soldering.   -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

Jeff Liebermann <jeffl@cruzio.com>: Feb 26 08:03AM -0800 >pins inside are near impossible to measure.   >There are so many variations of them too.   >Someone must have some sort of gauge to measure them....   Measure the OD with vernier, dial, or digital calipers.   For the ID, find a matching plug, and measure the OD of the mating center pin. That's also the ID of the receptacle. If the receptacle has a center pin, just measure its OD with the calipers.   Round off your measurements to agree with a list of typical connector sizes. <https://en.wikipedia.org/wiki/Coaxial_power_connector#Listing_of_DC_coaxial_connectors> If your measurements do not match anything in the tables, you did something wrong. Try again.   Drivel: I have to deal with a rediculous variety of laptop charger connectors: <http://www.ezbuybatteries.com/images/ac-adapter-connector.jpg> Standards are a good thing. Every company should have some.   -- 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

bruce2bowser@gmail.com: Feb 27 02:53AM -0800 On Monday, February 26, 2018 at 11:21:42 PM UTC-5, Ralph Mowery wrote: > used on the antenna cable called coax, such as RG-8, RG-6.   > The mating areas of the coax power connector are not crimped or any > other thing to change the mating dementions.   Oh. I guess we learn something new every day?

"Ian Field" <gangprobing.alien1@virginmedia.com>: Feb 26 09:26PM "N_Cook" <diverse@tcp.co.uk> wrote in message news:p6rppq$tgf$1@dont-email.me...   >> Peter Wieck >> Melrose Park, PA   > I'll bear that in mind, if I have to go inside.   So how old is the battery you haven't gone inside to replace?   There's a reset in there by shorting 2 test points - you usually have to do that after replacing the battery.   Can't hurt to try that, and its a good excuse to put a new battery in anyway.   Lithium coin cell shelf life is somewhere in the direction of 10yrs, but mine uses the oddball CR1620, so who knows how long its been hanging on the display rack.

N_Cook <diverse@tcp.co.uk>: Feb 27 08:26AM On 26/02/2018 21:26, Ian Field wrote:   > Lithium coin cell shelf life is somewhere in the direction of 10yrs, but > mine uses the oddball CR1620, so who knows how long its been hanging on > the display rack.   I'll probably go in there later this week. At the moment I'm checking it runs normal non-radio control for a few days. Set it to London time yesterday, and did not engage RC!, at some point it decided to move its time zone to New York time so 5 hours behind. Pressing button C, brought it back to UK time, currently still the "normal" slightly wavering correct UK time having passed thr a very cold night

jurb6006@gmail.com: Feb 26 10:22AM -0800 >"Yeah. A dumpster comes to mind. "   I have many reasons to not toss this. Namely old tapes. It is about like new save for this one issue.   If you are the type who just throws shit out you are part of the problem. You can at least give it away on Craigslist or Freecycle, and on the latter someone might trade you something for it.   Our landfills are filling up at an alarming rate, and tons of money going to China et al to build everything for us.

jurb6006@gmail.com: Feb 26 10:33AM -0800 >"You were lucky. I'm still throwing out all sorts of worthless electronic parts from VCR days. "   I have seen motor drive ICs go bad, after all they are a power output. End and reel sensors as well. Never a microprocessor. I suspect something in the system control circuit, but the IC last, after all other relevant things are checked.   I have only seen one SMPS transformer bad. It was putting out too much voltage and would not achieve regulation. I figure its resonance was high, inductance low possibly due to a cracked core. I had that once in a TV which produced too much HV and a narrow raster. the pulses on the collector of the HOT/LOPT transistor.   The last time I saw alot of bad non-power ICs was in Sylvania Alpha tuners and the old Magnavox "digital" tuners which were not PLL, just voltage synthesis.

Fox's Mercantile <jdangus@att.net>: Feb 26 02:41PM -0600 >> "Yeah. A dumpster comes to mind."   > I have many reasons to not toss this. Namely old tapes.   I thought you said you had one just like it?   > If you are the type who just throws shit out you are part of > the problem.   Not hardly. I have a 5000 sq ft shop full of "Shit with wires." Only the truly deserving get a one way trip to the dumpster.         -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

Terry Schwartz <tschw10117@aol.com>: Feb 26 01:44PM -0800 Don't you find watching old tapes on a modern TV painful?   I've gone down that route, and the picture quality stinks, even with very good equipment. Unless the screen is small, and even then.....

John-Del <ohger1s@gmail.com>: Feb 26 07:16PM -0800 > >"You were lucky. I'm still throwing out all sorts of worthless electronic parts from VCR days. "   > I have seen motor drive ICs go bad, after all they are a power output. End and reel sensors as well. Never a microprocessor. I suspect something in the system control circuit, but the IC last, after all other relevant things are checked.   I can no longer recall the brands they were used in (Akai?), but NEC uPcs in VCRs were problematic. We stocked them. IIRC, the numbers on them had the prefix uPc.

makolber@yahoo.com: Feb 26 12:29PM -0800 > A differential amp, to get rid of a ground loop.   > Or feed both devices from the same minus 12v point.   > Or both.   or an audio transformer to break the ground loop

makolber@yahoo.com: Feb 26 12:31PM -0800 > A differential amp, to get rid of a ground loop.   > Or feed both devices from the same minus 12v point.   > Or both.   or see if you can find a 12 to 19V ISOLATED power supply.   Isolated means the input and output grounds are not connected, This will also break the ground loop.

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