On 25 July 2015 at 22:39, yuri <[email protected]> wrote: > On 25 July 2015 at 21:38, Peter Simmonds <[email protected]> wrote: >> Hi, >> >> Power supplies can work intermittently before they die completely. It's >> easier to just replace them with something from Dick Smith. > > It wasn't just the power supply, it was the socket on the laptop that > the supply cord plugs into. > When you plugged in the power cord you could feel it wobbling inside.
I read that comment and thought "Is it an acer? I bet its an acer" > Acer laptop chargers are standard across all models and I got a new > one of those too because the wobbly socket shorted out the old one. > (No voltage detected by multimeter). Yep!. Its an acer. I had mine RTB for that exact fault, and sure enough, 12 months later after the warranty expired, the same fault happened again. > >> Also some laptops will not even power on without a good battery in them. >> Trademe often has a good selection of batteries. > > Battery is old, and the Linux power management utility tells me so > when I turn it on. But this wasn't the cause of the recent problem. > > >> I Reccommend trying the(se) common sense things first, as I am guessing most >> repair places will tell you that it needs a new motherboard (which may not >> necessarily fix the problem!). > > The repair guy told me what I already suspected, that the charging > socket getting loose and wobbly is a common problem. > He didn't sell me a new motherboard. > > After I got it repaired I got talking to other people who service > laptops and it turns out that wobbly charger sockets are very common Yeah. I dismantled mine and replaced the socket by hard-wiring the adapter into the motherboard with a load of ducttape and a soldering iron. Then I took out the dodgy socket, and it became apparent to me why it failed. They wired the motherboard contact onto the wrong place in the socket -_- Instead of wiring the ground rail to the ground pin of the socket ... they wired the ground to the chassis of the socket. Which just happens to be attached to the backplate, which is in turn, wired to the ground pin, in a brand new socket by matter of it being a tight fitting design and its literally just a "contact" fit. As the socket ages, every minor jiggle or wiggle moves that shell/backplate arrangement ever so slightly, and so over time, the "contact" fit becomes an open circuit .... This is of course my post-demolition analysis I did with a voltmeter, and I would have loved to try putting it together with the proper in wired up instead to prove my point. But alas, I had entirely destroyed the socket before I worked out why it wasn't working. And I very much suspect the standard replacements for that socket come pre-wired ( my searches as such suggest that ), and possibly pre-wired in the same wiggle-open-fail wear-tear configuration. -- Kent KENTNL - https://metacpan.org/author/KENTNL _______________________________________________ Linux-users mailing list [email protected] http://lists.canterbury.ac.nz/mailman/listinfo/linux-users
