Power suppy the prong that actually plugs into the laptop side snapped. me and a buddy then fixed it. it seems to work for a while but the solder finally gave out. i used my buddys charger because he has the same brand but now it doesnt do nothing. i than tried my other friends charger as he has the same exact model that i have and now the power on symbol flashes but nothing happens any advice?
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Re: power suppy
Seeing how the AC Power Cord Plug Snapped, It probably loosened the pins on the DC Power Jack (located on the motherboard...)....and you are shorting out from loose contacts on the DC Jack...
The DC PowerJack Will either have to be desoldered and cleaned then Resoldered.....
Or Purchase a New DC Jack and Replace With Old By Desoldering and soldering New in Place....
And of course.. get yourself a new charging cord, or go to radio shack and buy a new plug tip and reattach it to your Power Charger Cord End....
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Could be an actual problem with the power suppy ( power brick ) thats the first thing I would check.
Watch this video
How to test a power brick
If your power adapter is dead, then replace it. If its not then you have a problelm with your power connector which could need re-soldering on the motherboard, or you could have a problem with your computers motherboard.
Looking at the view all the way to the left, the jack is upside down in relation to how it is actually mounted to the motherboard. All 4 of those prongs go down into the motherboard, and are soldered to the motherboard.
The prongs on the sides formed out of the metal case, are for support. The prong all the way to the back goes to the Center Pin, and is the Positive connection.
The prong (Pin) in the middle, goes to the inner cylindrical shell within the DC Power Jack, and is the Negative connection. (Along with the two outside prongs used for support)
Battery removed use a No.2 pencil, and with the eraser see if you can gently move the Center Pin around. ANY perceptible movement means a bad DC Power Jack, and replacement.
If it seems the entire DC Power Jack moves around, it may be damage to the jack, or the solder connections for the prongs to motherboard, are cracked. Cracked solder joints just means use a little rosin flux, and rosin solder to re-solder those solder joints. (Solder connections )
DC Power Jack checks OK, normal diagnoses would lead you to the AC adapter. (Charger)
Center hole is the Positive ( + ) connection, and where the Positive (Red) probe lead of a multimeter goes. The Negative (Black) probe lead touches the cylindrical outside metal shell of the AC adapter's plug.
(Multimeter set to DC Voltage. If just a symbol, the symbol is a dotted line over a solid line. If more than one DC Voltage scale, set the Function knob to the 0 - 50 Volt DC scale.
MLCC ceramic capacitors used, are about 62 cents to 80 cents each.
Now price a replacement motherboard.
However, logic does sometimes dictate just replace the motherboard. Why? Because depending on electronic components that have failed, the damage could be further.
Or components may be weakened, and won't take long to fail after replacing failed ones.
Can you disassemble the laptop, and un-solder/solder the needed electronic components? If so, and the repair fails down the road, just open it back up, and decide if a motherboard is logical. (Price/availability)
IMHO (It's in my 'AOE', so that is what I would do)
On the AC adapter plug going to the laptop, the center pin is the Positive connection. The outer cylindrical metal shell is the Negative connection.
AC adapter puts out 18.5 Volts? Have an assistant;
1) Gently wiggle the power cord coming TO the AC adapter.
2) Gently wiggle the cable coming FROM the AC adapter TO the laptop.
See if you get an intermittent reading on the multimeter. Indicates a broken wire.
[ An economical, but fine for this test, multimeter, can be purchased for as little as $8 to $12, here in the US. Analog or digital is fine. Available in a multitude of stores. An auto parts store is but one example ]
AC adapter checks out it's on to the DC Power Jack. This jack is the round port on the laptop, that the plug from the AC adapter plugs into.
Battery removed use a wooden small object, and gently see if you can move the center pin around, for the DC Power Jack.
See if the rest of the DC Power Jack will move around. ANY perceptible movement means a problem with the DC Power Jack.
The DC Power Jack looks like this not mounted to the motherboard,
You apparently have visually checked the DC Power Jack, but also perform a continuity check of the jack, if you have not done so.
The DC Power Jack connections are the Center Pin, which is the Positive connection, and the outside metal cylindrical shell, which is the Negative connection.
Multimeter set to Ohms, (Omega symbol. If more than one setting, set the Function knob to 1K), touch the Positive (Red) probe lead of the multimeter to the center pin.
At the same time, touch the Negative (Black) probe lead of the multimeter, to the outside shell.
The amount of the reading, isn't as important, as getting an actual reading. No reading on the multimeter means the jack's circuit has a break.
If so this can merely be caused by a cracked solder connection. The jack's prongs, or pins that go down through the motherboard, are soldered. If one of these solder connections is cracked, power will not flow through the DC Power Jack.
This is all it takes. One broken/cracked solder joint.
Example of a Gateway MT6804h Notebook PC, DC Power Jack,
The laptop needs to be disassembled down to the motherboard, the power plug is not soldered to the motherboard, it is actually a satellite card attached to the motherboard via a small cable. The entire assembly can be purchased on Ebay for under 30 bucks. Below is an example of the listing. I will include a link to an illustrated disassembly guide.
whatabout the lead that plugs into the laptop ?
does the plug in the laptop move easily, with the lead in,
Sounds like the actual plug in the laptop is breaking away, the solder around the connector. Sadly to fix that you will have to get it repaired for about £50 to £70, maybe more ??
please make sure the lead from power supply is not loose or a bad fitting.
It’s either the plug on the AC adaptor (might have a broken wire) or the laptop’s input jack that the adaptor plugs into. The input power jack is soldered onto the motherboard. Could also be a problem with the charging circuit on the motherboard (would need to replace motherboard to fix). Your responses are intended to improve the level of service provided. Please show your appreciation by rating your experience. Thank You.
The problem is not the chargers, it is the power connector on the laptop. Yes it can be fixed, laptop need to be dismantled to get access to this connector and a new one to be soldered in.
If you can't do it yourself the cost of fixing it may be expensive and if the laptop is a fews years old, it might be better putting this money towards a new laptop.