I have the Samsung R480 the first problem I had with it was my ac cord needed to be replaced. The cord shorted and started smoking. I sent it to Samsung and they replaced the cord and everything was fine. After that it worked fine again until it stopped taking a charge. I replaced the ac cord again thinking that may be the problem. It was not. I then ordered a new battery and that was not the problem either. When the new battery showed up it had a little bit of power and I was able to turn my computer on and use it very briefly. I tried to find out how to use the computer with just the ac cord plugged in. Once the battery died I have not been able to get it to charge again. The charging indicator light will turn green for a moment when I plug it in with the battery but then flashes orange. When I have it plugged in with just the ac cord and no battery it stays solid yellow. It does this with both the old and new battery. I have opened it up and cleaned the entire inside and now the battery indicator light stays a solid orange but the battery will not charge. I have tried turning the computer on with just the ac cord plugged in but for some reason that does not work on my computer. I have also tried to charge both batteries with no luck. I've bought a replacement dc jack but am really hoping I don't have to replace that (saudering scares me). Also when I try to turn the computer on the blue power light will flash briefly but will not power up. Before this issue the computer worked fine. It just seems I have major issues with the power part! Please help! I miss my computer and don't want to spend the money on another and of course this issue cropped up two months after the warranty ended!
Swap out the ram one at a time testing to see if you can power up, making sure there is one in the memory slot at all times, if this works the piece in your hand is defective, no difference! the motherboard has major issues.
Whew! Not being able to see the motherboard, and damage done, and you need advice?
Okay, onward.
Let's start with some basics first BEFORE you go on.
1) Use a 25 Watt soldering iron, or just stop. Use a No.2 chisel tip.
Use a soldering iron holder with a damp sponge in the base, or have a damp sponge nearby.
(Or use a soldering station)
Keep the tip clean, and well tinned. (Tinned = thin coat of solder)
2) Use .030 Rosin core solder, and Rosin paste. Buy a small brush for the paste.
3) DO NOT linger too long, or you will burn the motherboard, and lift the circuit trace 'hole', right off of the motherboard.
(Crude explanation of a circuit trace, is the thin copper 'wires' on the motherboard)
Lift the circuit trace off, and you will be soldering a jumper wire, (With insulation on it), to an area back on the circuit trace away from the 'hole', and over to one of the DC Power Jack leads. ('Pins')
3) Linger too long on a circuit trace, and it will burn. It will Not accept solder anymore. You cannot tin it.
(Time for the jumper wire again)
4) To remove a DC Power Jack, turn the motherboard upside down. I hold it with one hand. Then use your fingers, and thumb to apply pressure on the jack.
The tips of your fingers, and thumb, act as a fulcrum against the motherboard. While applying steady pressure, (Don't get carried away), apply heat to one of the DC Power Jack leads.
As the lead starts to come out, S-T-O-P
The other leads are still holding the jack to the motherboard.
The procedure is to heat one lead, and pull it slightly out. Then go to another lead near it, apply heat, then pull it slightly out.
Keep going around until all leads of the jack, are free from the motherboard.
HOWEVER, go S-L-O-W. You have all the time in the world. Don't believe me? Mess it up, and you have no place to plug your AC adapter in.
After you heat one lead, and pull it slightly up, allow the motherboard to cool down. (Cool to the touch)
Go to the next lead, heat it up, pull the lead slightly out, let the motherboard cool down.
You have all the time in the world.
Once the DC Power Jack is free, there may be a thin skin of solder covering the circuit trace holes, where the leads of the jack was.
This is FINE. Leave them alone.
When you go to install the new DC Power Jack, you will be pressing the leads against the solder covered holes. Touch the tip of the soldering iron against the solder covered hole/s, and the leads will poke through.
Let's look at a DC Power Jack, for a Samsung R60 series of Notebook PC,
http://www.laptopdcjack.net/product_info.php?manufacturers_id=22&products_id=1051&osCsid=n9lotjmn6q04eka4n84gh1htp5
WAIT A MINUTE, this jack connects to a cable. You soldered the leads together, when you were soldering the cable on?
Better take the new DC Power Jack, AND the cable, down to your nearest 'Mom and Pop' computer repair shop, and let them do it.
Cost will probably be a song.
Regards,
joecoolvette
SOURCE: Laptop wont power up with Battery Installed
Check the following site: http://batteryrefill.com/
SOURCE: my computer doesnt recognise the ac power charger
The DC jack in the laptop is a common source of trouble, and in this case may need to be replaced. The computer will need to be dismantled down to the motherboard to address the issue.
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