- Microscopic Solder Job - 6 Updates
- Apple throttled your iPhone by cutting its speed almost in HALF! - 2 Updates
rickman <gnuarm.deletethisbit@gmail.com>: Jan 20 05:24PM -0500 (PeteCresswell) wrote on 1/20/2018 9:02 AM: >> Also, place this into a container with a desiccant (rice will work as well) This will absorb any remaining moisture. > Somebody, somewhere, suggested soaking it in distilled water prior to those > other steps. There is a lot of "information" about this sort of thing that is crap. Regular water is used to clean PCBs when made to wash off the residue from soldering. Water is not a problem other than when the unit is turned on, any remaining moisture acts to short out the signals. It doesn't fry chips or cause permanent damage unless it gets into the display or is left long enough to cause corrosion. The only real problem is residual water that gets under the ICs and other components. There can be a space as small as 5 thousandths of an inch which is not so easy to clean out. If you want to use anything to clean the board of water you can wash it with acetone, but NOT the stuff used for nail polish removal, it has oil in it. Get some from the paint department. But even that is not needed, nor are desiccants or rice. Unless you live in a very humid location the unit will dry out in a couple of days. The best spot for it is near the vent from your furnace or AC. That air is very dry and having moving air around the phone helps to move the moisture away quicker. Probably not the best idea to put it on top of the vent as it may get too warm, but unless you have a gas or oil furnace that isn't likely to happen, still give it a few inches. -- Rick C Viewed the eclipse at Wintercrest Farms, on the centerline of totality since 1998 |
"(PeteCresswell)" <x@y.Invalid>: Jan 20 05:31PM -0500 Per rickman: >There is a lot of "information" about this sort of thing that is crap. >Regular water is used to clean PCBs when made to wash off the residue from >soldering. IIRC, the rationale was that different water has different amounts of dissolved salts... and the salts can cause electrical problems even after the board is dried... so the distilled water would dilute any salts that might be present. -- Pete Cresswell |
rickman <gnuarm.deletethisbit@gmail.com>: Jan 20 06:16PM -0500 (PeteCresswell) wrote on 1/20/2018 5:31 PM: > dissolved salts... and the salts can cause electrical problems even after the > board is dried... so the distilled water would dilute any salts that might be > present. Yes, I suppose if you drop your phone in salt water, that could be a different problem. -- Rick C Viewed the eclipse at Wintercrest Farms, on the centerline of totality since 1998 |
tabbypurr@gmail.com: Jan 20 05:26PM -0800 On Saturday, 20 January 2018 22:32:02 UTC, (PeteCresswell) wrote: > dissolved salts... and the salts can cause electrical problems even after the > board is dried... so the distilled water would dilute any salts that might be > present. correct, and of course nearly all water has some salts in. And it also ought to be obvious that there is always powered circuitry in all modern phones. NT |
rickman <gnuarm.deletethisbit@gmail.com>: Jan 20 09:32PM -0500 >> present. > correct, and of course nearly all water has some salts in. > And it also ought to be obvious that there is always powered circuitry in all modern phones. Why is power relevant? We are talking about drying a phone. The battery will be out, the SIM card will be out and of course the cover is off. What is the significance of either the tiny amount of "salts" in typical water. Actually, the phone was run through the washing machine. The soaps/detergents in the water are much more of a factor than the latent dissolved solids in the tap water. I would recommend the OP rinse the phone under running tap water for five or ten minutes to get all the wash water out. The tap water won't hurt *anything* in comparison, in fact it will be like a person going to the spa. -- Rick C Viewed the eclipse at Wintercrest Farms, on the centerline of totality since 1998 |
"pfjw@aol.com" <pfjw@aol.com>: Jan 21 05:22AM -0800 On Saturday, January 20, 2018 at 9:32:21 PM UTC-5, rickman wrote: > under running tap water for five or ten minutes to get all the wash water > out. The tap water won't hurt *anything* in comparison, in fact it will be > like a person going to the spa. Ricky!! Are you trying to be obtuse, or is it your natural state? Tap water: Up at our summer house, the tap water is from a shallow well, from an aquifer that is about 8' deep during a dry summer, and filtered through many feet of ground on the 'fill' side of a fast-running, rock-bound creek. Effectively, that means "Coarse sand to China". There are very few dissolved minerals nor much of anything else in that water. We filter it for silt, and we use a carbon filter 'just in case'. Year after year after year (now over 30) it tests negative for bacteria and so forth. Rinsing something in that water would be relatively low risk. At home, the water is 10,000 year old deep-well water provided by the local utility mixed with Schuylkill River water, with a varying hardness from about 6 grains to 16 grains per gallon. 3.5 - 7 grains is considered moderately hard. 16 is 'cut it into chunks' range. Using this water from the tap would be dangerous in the extreme. Going to a Spa: If the two hot tubs we keep are any indication, that water will be highly mineralized - WAY up there in calcium. This is done to protect against corrosion amongst other things. Water from such a source would leave a white film when it evaporates - which would be mostly calcium. We choose to use calcium as when we drain the spa, it is not harmful, and happens to be good for certain types of native trees that are now stressed in Pennsylvania. pH neutral, highly mineralized water happens to be good for human skin, but would be pretty wretched for cell phones. Sources of "power" in cell-phones with neither batteries nor chips: Can you say "electrolysis"? And if you can say it, do you understand how it works, at least in theory? And, past the theory, do you have the capacity to conceive of how it might be a factor in a device with many different types of metals, surrounded with a highly salted electrolyte? An aside to that - does anyone here remember the old-fashioned electrolysing humidifiers? Basically a Mason Jar with a plug-in Bakelite device on top that relied on the conductivity of the water to operate? https://i.pinimg.com/564x/8b/16/cd/8b16cdc79502244129bfb85f09755820--respiratory-therapy-electrical-cord.jpg These do not work at our summer house - and work fine at home. Just like you jumped into the discussion on UV and eyes, with a "look-at-me, aren't I smart" - that was not, this is another similar 'contribution' born of a fundamental lack of knowledge and a need to play 'me-to'. God help anyone that takes your advice to heart. Peter Wieck Melrose Park, PA |
"pfjw@aol.com" <pfjw@aol.com>: Jan 20 09:29AM -0800 On Saturday, January 20, 2018 at 11:35:54 AM UTC-5, Fox's Mercantile wrote: > Replying to yourself now eh? > Why don't you take your Appleshit somewhere else and go fuck off. He needs to wallow in the former, and is incapable of the latter. |
Jolly Roger <jollyroger@pobox.com>: Jan 20 06:26PM >> On Wed, 27 Dec 2017 15:28:50 +0000 (UTC), harry newton wrote: > Replying to yourself now eh? > Why don't you take your Appleshit somewhere else and go fuck off. He's an Android/Linux zealot who incessantly trolls the Apple newsgroups. Apple posters don't want anything to do with him either. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR |
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 - 8 updates in 2 topics"
Post a Comment