Dell power jack refuses to budge
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From: 123Jim on 17 Mar 2010 09:36 "GT" <ContactGT_rem_ove_(a)hotmail.com> wrote in message news:4ba0d5d1$0$16085$c3e8da3(a)news.astraweb.com... > "123Jim" <jnkjnjnini(a)uhnuhnunuhnuy.invalid> wrote in message > news:hnqh9e$qf3$1(a)news.eternal-september.org... > > The motherboard shouldn't jump on its own - ......... Depends how hard I stab it with the soldering iron ;) (picture an enraged would be 'soldering guy' yelling "I'll teach you not to melt after two hours of trying!" ;) > An upside down mouse mat might do the trick. I'll bear that in mind for next time, thanks
From: kony on 17 Mar 2010 10:33 On Tue, 16 Mar 2010 09:09:49 -0000, "123Jim" <jnkjnjnini(a)uhnuhnunuhnuy.invalid> wrote: >Hi all, >I was trying to replace a power jack on an inspiron 1501 laptop. An >operation I have avoided for some time due to the possible outcome being the >catastrophic destruction of the motherboard or components thereof. > >I removed the motherboard , but could not melt the solder sufficiently to >release the power jack. I used two different 30 watt soldering irons with >sharp and not so sharp iron points and one 100 watt soldering gun. > >My technique leaves a lot to be desired: place motherboard on newspaper, >place finger under motherboard next to jack, apply iron to one joint at a >time so that it melts the solder and pushes through. unfortunately there >being 8 joints and stubborn solder made it impossible to move. The best way >would be to heat all eight joints simultaneously, but I have no idea how to >achieve that. > >what I need is a nice soldering guide, specifically for computer parts. > >any ideas? >cheers > Use a solder sucker or desoldering wick, or as someone finally mentioned you can destroy the jack so each lead is individual to pull out one at a time. However, I suspect your primary problem is a poor soldering iron tip. Granted, lead-free solder is more difficult to reflow but even then significant problems tend to come from having a poor or dirty soldering iron tip since a 30W iron should be high enough powered to do the job. Clean the tip, tin the tip, and if all else fails get a better iron... which will be a useful tool to have for many more years of soldering jobs.
From: Paul on 17 Mar 2010 11:28 123Jim wrote: > "mike" <spamme0(a)go.com> wrote in message > news:hnp600$soc$1(a)news.eternal-september.org... >> 123Jim wrote: >>> Hi all, >>> I was trying to replace a power jack on an inspiron 1501 laptop. An >>> operation I have avoided for some time due to the possible outcome being >>> the catastrophic destruction of the motherboard or components thereof. >>> >>> I removed the motherboard , but could not melt the solder sufficiently >>> to release the power jack. I used two different 30 watt soldering irons >>> with sharp and not so sharp iron points and one 100 watt soldering gun. >>> >>> My technique leaves a lot to be desired: place motherboard on newspaper, >>> place finger under motherboard next to jack, apply iron to one joint at a >>> time so that it melts the solder and pushes through. unfortunately there >>> being 8 joints and stubborn solder made it impossible to move. The best >>> way would be to heat all eight joints simultaneously, but I have no idea >>> how to achieve that. >>> >>> what I need is a nice soldering guide, specifically for computer parts. >>> >>> any ideas? >>> cheers >> Can you not bust the plastic to free up the individual pieces >> for removal one at a time? > > I didn't think of that. That would indeed help, as long as I can actually > melt the solder on one joint at a time, and in destroying the jack as you > suggest, I don't damage the board. The jack has a metal case, but that could > be snipped through. or maybe better ... hacks gently. > > I'm glad I didn't think of it though! .... as after all the heating, pulling > and squashing of the jack. It now give a good fit on the cable, and now the > laptop has reliable power from the mains. (Even though it does not charge > the battery) .. > > In addition to the bad jack .. the other problem with this laptop is, the > battery is in bad shape and does not hold a charge for any length of time.. > so not being able to charge this battery is not a great loss until a new > battery is procured. that expense might be avoided until this jack is > broken, worn out and finally replaced (successfully next time), if it ever > is .. since not having battery backup will result in the laptop being more > like a desktop where you must keep the power connected. That will result in > less wear on the jack ... ( just so long as having people's legs hooked up > in the cable can be avoided) > You can find more powerful soldering irons. Eventually that solder is going to melt :-) If you get too aggressive though, you could damage the tip on your solder pump. http://www.hmcelectronics.com/cgi-bin/scripts/product/0400-0029/American-Beauty-3178-300W/ Paul
From: 123Jim on 17 Mar 2010 11:35
"Paul" <nospam(a)needed.com> wrote in message news:hnqsf9$jr4$1(a)news.eternal-september.org... > 123Jim wrote: >> "mike" <spamme0(a)go.com> wrote in message >> news:hnp600$soc$1(a)news.eternal-september.org... >>> 123Jim wrote: >>>> Hi all, >>>> I was trying to replace a power jack on an inspiron 1501 laptop. An >>>> operation I have avoided for some time due to the possible outcome >>>> being the catastrophic destruction of the motherboard or components >>>> thereof. >>>> >>>> I removed the motherboard , but could not melt the solder sufficiently >>>> to release the power jack. I used two different 30 watt soldering irons >>>> with sharp and not so sharp iron points and one 100 watt soldering gun. >>>> >>>> My technique leaves a lot to be desired: place motherboard on >>>> newspaper, place finger under motherboard next to jack, apply iron to >>>> one joint at a time so that it melts the solder and pushes through. >>>> unfortunately there being 8 joints and stubborn solder made it >>>> impossible to move. The best way would be to heat all eight joints >>>> simultaneously, but I have no idea how to achieve that. >>>> >>>> what I need is a nice soldering guide, specifically for computer parts. >>>> >>>> any ideas? >>>> cheers >>> Can you not bust the plastic to free up the individual pieces >>> for removal one at a time? >> >> I didn't think of that. That would indeed help, as long as I can actually >> melt the solder on one joint at a time, and in destroying the jack as you >> suggest, I don't damage the board. The jack has a metal case, but that >> could be snipped through. or maybe better ... hacks gently. >> >> I'm glad I didn't think of it though! .... as after all the heating, >> pulling and squashing of the jack. It now give a good fit on the cable, >> and now the laptop has reliable power from the mains. (Even though it >> does not charge the battery) .. >> >> In addition to the bad jack .. the other problem with this laptop is, the >> battery is in bad shape and does not hold a charge for any length of >> time.. so not being able to charge this battery is not a great loss until >> a new battery is procured. that expense might be avoided until this jack >> is broken, worn out and finally replaced (successfully next time), if it >> ever is .. since not having battery backup will result in the laptop >> being more like a desktop where you must keep the power connected. That >> will result in less wear on the jack ... ( just so long as having >> people's legs hooked up in the cable can be avoided) > > You can find more powerful soldering irons. Eventually that solder > is going to melt :-) If you get too aggressive though, you could > damage the tip on your solder pump. > > http://www.hmcelectronics.com/cgi-bin/scripts/product/0400-0029/American-Beauty-3178-300W/ > > Paul 300watts . lol .. that's the one I need! I'll be a one man melting machine. If it doesn't move it gets melted ;) |