sci.electronics.repair@googlegroups.com

Google Groups

etpm@whidbey.com: Jul 19 10:45AM -0700 I opened a new package of Kirkland brand AA batteries but when I put them in the device I got the flashing LED mesage of low voltage. Out of 6 batteries 3 were bad. Measuring the voltages one battery measured .82 volts, another 1.1 volts, and a third one measured -87 mV. Negative? Really? Yeah, I thought that too. But I made sure the meter leads were correctly placed. So I guess something weird is happenening to these batteries while they are sitting in the package. Maybe they are getting ready to leak. I'm thinking that package needs to go back. to Costco. Eric

"pfjw@aol.com" <peterwieck33@gmail.com>: Jul 19 11:17AM -0700 Tell you a story:   Energizer Batteries, 1960s-vintage Civil Defense Geiger Counter - my wife collected Fiesta Ware at the time. Paid $30 for the counter and its accouterments at a surplus sale.   Batteries blew up. Sent the unit to Energizer.   6-weeks later, I received a check from Energizer for $349.67, or some such close to that number, together with a polite note not to keep batteries in a device while in storage.   Nothing but US-made batteries, from here on out. With Energizer being the preferred vendor.   You may have saved $2 for that pack over a domestic name-brand. But it is costing you the trouble of returning them - which in any case will be far more than $2, probably enough for half-a-dozen 'real' batteries.   Peter Wieck Melrose Park, PA

Allodoxaphobia <trepidation@example.net>: Jul 19 08:11PM > to these batteries while they are sitting in the package. Maybe they > are getting ready to leak. I'm thinking that package needs to go back. > to Costco.   Yes! By all means return them to Costco with an attached note as to their failure(s).   I've been buying, storing (in a fridge), and using Costco's D, AA, AAA, and 9V batteries for at least 2 decades without issue. Any retailer can get hurt by bad products from a supplier. But, without feedback . . . . .   Jonesy -- Marvin L Jones | W3DHJ | W3DHJ | https://W3DHJ.net/ Pueblo, Colorado | @ | Jonesy | __ linux FreeBSD 38.238N 104.547W | jonz.net | DM78rf | 73 SK

John-Del <ohger1s@gmail.com>: Jul 19 01:55PM -0700 On Friday, July 19, 2019 at 4:11:10 PM UTC-4, Allodoxaphobia wrote: > Marvin L Jones | W3DHJ | W3DHJ | https://W3DHJ.net/ > Pueblo, Colorado | @ | Jonesy | __ linux FreeBSD > 38.238N 104.547W | jonz.net | DM78rf | 73 SK     I've never bothered experimenting, but Duracell recommends storing alkalines at room temp - storing in the refrigerator is not recommended. Supposedly, rechargeables (other than eneloop types) will hold their charge longer if cold, but who knows?

tabbypurr@gmail.com: Jul 19 04:55PM -0700 > are getting ready to leak. I'm thinking that package needs to go back. > to Costco. > Eric   I've had some with small negative v too. No idea what the chemistry is that's making that happen.   As for brands, most are much the same. ZnC and alkaline certainly aren't, but otherwise they're not a lot different. All are liable to leak when flat. ZnC sometimes leak when half flat.     NT

dplatt@coop.radagast.org (Dave Platt): Jul 19 05:30PM -0700 In article <13428149-1bb2-494a-8939-9db59575302a@googlegroups.com>,   >I've had some with small negative v too. No idea what the chemistry is that's making that happen.   >As for brands, most are much the same. ZnC and alkaline certainly aren't, but otherwise they're not a lot >different. All are liable to leak when flat. ZnC sometimes leak when half flat.   A decade ago, I was happily buying the Kirkland-brand AAs from Costco, getting good in-service lifetime and no problems to speak of.   A few years ago, something changed. I began to find their AAs starting to leak, while still fully charged (never put into service), while still in the original storage box or shrink-wrap package, well before their labeled "use by" date.   I don't know whether they changed suppliers, or whether their old supplier's quality fell through the floor... but the result was the same. I've stopped buying the Kirkland batteries.

Allodoxaphobia <trepidation@example.net>: Jul 20 01:18AM On Fri, 19 Jul 2019 13:55:17 -0700 (PDT), John-Del wrote: > alkalines at room temp - storing in the refrigerator is not > recommended. Supposedly, rechargeables (other than eneloop types) > will hold their charge longer if cold, but who knows?   My para-chemist opinion is that alkaline batteries are based on chemical processes, and chemical processes are slowed by lower temperatures. (Just try starting your car in -50 degrees Fahrenheit. I have.)   My other opinion is that (insert any company name here) has a mission statement that - (paraphrasing) states "We are here to move product". (That's why peanut butter and jelly jars contain ridges. You buy 8 oz. and throw out .25 oz. Big deal? Well, after millions and millions of .25 ounces are thrown out, you can see They Moved A Lot Of Product.   That's my belief and I'm sticking to it. :-) Jonesy -- Marvin L Jones | W3DHJ | W3DHJ | https://W3DHJ.net/ Pueblo, Colorado | @ | Jonesy | __ linux FreeBSD 38.238N 104.547W | jonz.net | DM78rf | 73 SK

Rheilly Phoull <rheilly@bigslong.com>: Jul 20 10:00AM +0800 On 20/07/2019 8:30 am, Dave Platt wrote:   > I don't know whether they changed suppliers, or whether their old > supplier's quality fell through the floor... but the result was the > same. I've stopped buying the Kirkland batteries.   Seems to be the same with all brands now, must be they have found a cheaper way to produce.

Jeff Liebermann <jeffl@cruzio.com>: Jul 19 09:39PM -0700 >are getting ready to leak. I'm thinking that package needs to go back. >to Costco. >Eric   Perhaps something like this mess? <http://www.learnbydestroying.com/jeffl/crud/Kirkland-AAA-leak.jpg> Actually, I've have fairly good luck with Kirkland batteries. I buy quite a few in various sizes. Most work, but occasionally, I get a loser like the one's in the photo.   -- 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

Jeff Liebermann <jeffl@cruzio.com>: Jul 19 09:50PM -0700 On Fri, 19 Jul 2019 17:30:54 -0700, dplatt@coop.radagast.org (Dave Platt) wrote:   >starting to leak, while still fully charged (never put into service), >while still in the original storage box or shrink-wrap package, well >before their labeled "use by" date.   It was more than a few years. In 1996, mercury was removed from alkaline and other batteries. Mercury is what prevented leaks: <https://en.wikipedia.org/wiki/Alkaline_battery> When introduced in the late 1960s, the zinc electrode of alkaline batteries (in common with the then ubiquitous carbon-zinc cells) had a surface film of mercury amalgam. Its purpose was to control electrolytic action at impurity sites, which would reduce shelf life and promote leakage. With reductions in mercury content being mandated by various legislatures, it became necessary to greatly improve the purity and consistency of the zinc.   >I don't know whether they changed suppliers, or whether their old >supplier's quality fell through the floor... but the result was the >same. I've stopped buying the Kirkland batteries.   Since they can't use mercury, they have to use highly refined zinc which I assume is expensive. In theory, using only the purity of the zinc, they could adjust how long the battery will last before leaking by simply controlling the impurity level in the zinc.     -- 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

"Percival P. Cassidy" <Nobody@NotMyISP.net>: Jul 20 11:00AM -0400 On 7/19/19 9:18 PM, Allodoxaphobia wrote:   > 8 oz. and throw out .25 oz. Big deal? Well, after millions and millions > of .25 ounces are thrown out, you can see They Moved A Lot Of Product.   > That's my belief and I'm sticking to it. :-)   A few decades ago in another country I had a scraper/spatula with an edge shaped to match the ridges in cans and jars. Haven't seen such a thing since.   Perce

etpm@whidbey.com: Jul 20 09:43AM -0700 On Fri, 19 Jul 2019 21:39:03 -0700, Jeff Liebermann <jeffl@cruzio.com> wrote:   >Actually, I've have fairly good luck with Kirkland batteries. I buy >quite a few in various sizes. Most work, but occasionally, I get a >loser like the one's in the photo. Yeah, I've had good luck with Kirkland batteries too. Certainly no worse than any other brand. This package was then first to contain bad cells. I'm still curious about the reversal of the polarity in the one cell. Eric

Lucifer <LuciferMorningstar@bigpond.com>: Jul 20 02:07PM +1000 On Wed, 17 Jul 2019 09:59:36 -0700 (PDT), three_jeeps   >I have a few lightning-usb cables that have a damaged lightning plug. >Is there any place to buy just the plug so I can replace the damaged one?   The complete cable is cheap.

Stu jaxon <stankowalski02@gmail.com>: Jul 19 03:05PM -0700 On Friday, July 19, 2019 at 10:18:29 AM UTC-4, John-Del wrote:   > This is why we go through several tests before estimating the job for the customer, and why we repair about 95 percent of the boards we see.   > There are several guys in our association that sell parts on ebay, but these guys are technicians who will only sell verified boards.   > The good news is that Electroparts is a good company and they'll replace or refund without question.   the short is still there, with the lvds cable removed. just bought the tcon board.? I now noticed that the backlights go off off after a minute or two, high voltage shut down..? I put the original main board back in, and got two 12v & 5v inputs to the tcon on cn702..

John-Del <ohger1s@gmail.com>: Jul 19 05:19PM -0700 On Friday, July 19, 2019 at 6:05:31 PM UTC-4, Stu jaxon wrote:   > > There are several guys in our association that sell parts on ebay, but these guys are technicians who will only sell verified boards.   > > The good news is that Electroparts is a good company and they'll replace or refund without question.   > the short is still there, with the lvds cable removed. just bought the tcon board.?     You're confusing me. Are you saying that both the original TCON board and the one you just bought are showing a low ohm short to ground as read on that ferrite bead near the LVDS cable?     >I put the original main board back in, and got two 12v & 5v inputs to the tcon on cn702..   Again, see if there is any 12DC voltage on the LVDS connector when it is disconnected from the TCON. IIRC, the CN702 connector goes to the power supply, not the main. Is there 12V on the LVDS connector when it is lifted off the TCON?

Stu jaxon <stankowalski02@gmail.com>: Jul 19 05:28PM -0700 On Friday, July 19, 2019 at 8:19:59 PM UTC-4, John-Del wrote:   > You're confusing me. Are you saying that both the original TCON board and the one you just bought are showing a low ohm short to ground as read on that ferrite bead near the LVDS cable?     > >I put the original main board back in, and got two 12v & 5v inputs to the tcon on cn702..   > Again, see if there is any 12DC voltage on the LVDS connector when it is disconnected from the TCON. IIRC, the CN702 connector goes to the power supply, not the main. Is there 12V on the LVDS connector when it is lifted off the TCON?   yes, both the original TCON boards fb are shorted. no 12v when lvds is disconnected.

Fox's Mercantile <jdangus@att.net>: Jul 19 09:55PM -0500 Do either of you know how to use an editor?     -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com

"Colonel Edmund J. Burke" <Your_Colonel@usa.com>: Jul 19 02:45PM -0700 On 7/17/2019 4:21 PM, assworm wrote:

KenW <ken1943@invalid.net>: Jul 19 11:42AM -0600 >are getting ready to leak. I'm thinking that package needs to go back. >to Costco. >Eric   Cheap batteries are easy to find, just look at the too low price.     KenW

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.