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My tablet has been charging really slowly for a couple of days - like I used to leave it on standby while I slept and it'd be 100% by the time I wake up: but now I'm lucky if it charges to 50% when it's turned off and charging all day. Tried different chargers, different cables, ...
So I ran a toothpick over the micro USB connector and it seems to be charging faster, and I'm guessing it's gunk build up over time. Anyone got a good way to clean it, given the connector is teeny?
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Sulfuric acid ? 
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Difficult to get hold of in the UK these days.
And I'm not convinced it will do the PCB the connector is mounted to any good. 
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Did you ever have a chemistry set? Make some yourself! 
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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It will (dis)solve everything 
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sulphuric acid may be hard to get but normal car batteries (normal cars, not normal batteries) still mostly use HCl
... if it's one of those newer fully sealed batteries may need to apply a hammer and awl/chisel rock and screwdriver discount store scissors to get the good stuff out - and a good supply of bandages to stem the blood flow when the discount store scissors shear at the hinge and puncture your wrist and other fragments fly into your eyes.
there's still proper man-toys available with a bit of looking around, ... lately I've been recycling HDD's to get rare earth magnets (newer HDD's often only have 1 magnet - damn cheapo [oem] manufacturers.)
This internet thing is amazing! Letting people use it: worst idea ever!
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What do you do with the magnets? They are tiny and not soooo strong. How about this one[^]?
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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magnets just to prank people ... damn hard to remove from the right sort of flat surface
This internet thing is amazing! Letting people use it: worst idea ever!
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That's why I want to ship that strong one in a small box. The poor mail man.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Too strong and far too heavy. I would not get off the ground with it.
The strongest ones I have here right now are in this motor[^].
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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OriginalGriff wrote: Difficult to get hold of in the UK these days.
It's on sale in most of the South London pubs, but only to fifteen year olds.
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Q-tip and Isopropyl alcohol (let it evaporate mostly - just damp, not dripping). Adjust the cotton tip to your liking. Works like a charm. I also use compressed air to get the big dust particles, etc. out.
Also, wipe down the connector to the charging cable as well with a mostly evaporated alcohol wipe, etc.
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You beat me by a sec!
"If we don't change direction, we'll end up where we're going"
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Not enough space for a Q-tip - it's a USB Micro-B socket, so I can only just get the tip of a toothpick in there, and can't "rub" the actual connectors at all that I can see. (See http://www.usb.org/developers/docs/devclass_docs/CabConn20.pdf[^] Page 41 / 48 - or Page 33 as far as the document page numbering is concerned)
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Stupid me, I was not paying attention to the type of connector you were specifying. Um, yeah, I would just use compressed air then. I would not use a toothpick as you could damage something, but that is your call of course.
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Search Amazon for this: Skylety 17 Pieces Cell Phone Cleaning Kit. Might help you.
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Nitrogen!
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There are special cleaning sprays but they might be too expensive for single usage (we have them at work so that I don't have to buy them).
For not corroded contacts we use KOC WebSite: Maintenance and Repair products: Kontakt WL[^]. For corroded contacts it is also used to wash out the residues after using Kontakt 60.
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A model (Humberol) paint brush and a spray can of IPA or Contact cleaner. Model/toy shop for the brush, the spray can of contact cleaner can be got from the automotive section of most stores (the local Tesco for instance). 
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The wife's phone has that little "no right side up" charging cable and she is experiencing the same thing.
I'll try the toothpick thing this evening. I appreciate your sharing and all the other advice people have offered in this thread.
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My phone was charging very slowly a while back. I killed some processes and it started charging quite fast. Must have been a background process keeping it busy and draining the battery.
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I was having the same problem with my phone.
I solved it by powering it off, and then I used a thin pin to dig all of the gunk out of the slot. I was amazing at just how much had accumulated in there. It was USB-C, though, so it's a bit bigger than microUSB. Looking in a nearby micro USB port, it looks like a pin or needle would work on one side of the connector block in the middle, but I don't think it would fit between the connector block and the "top" of the port.
SIM card ejector tools like these ones might work well. Some of them are more flat than round, so they might actually be able to clean out the whole micro USB port.
When you've got it cleaned, you can get dust covers to pop in the port when you're not charging to prevent the buildup from happening again.
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