Help me fix my uncle's lappy

Heavy Light 117 · 2009-11-28

The laptop is an A35-s1592. Symptoms: Won't turn on. Lights come on but then they turn off instantly. If plugged into the wall 2 lights come on: AC connected and Battery charging. When I try to power up all lights come on but then they all turn off. I already took it apart reseated the cpu heatsink cleaned it out, reseated the ram, tried to boot without hard drive, dvd drive and even ram... nothing works. Look up solutions online and there are a lot of people selling dc jacks for these models. How do I pinpoint whether or not my dc jack is messed up or needs re-soldering? Also how do I complete disassemble this laptop? I can't find any guides... thanks in advance and rep to those who help me figure this out.

GodofGrunts

· #2 · Nov 28, 2009

Sounds like its shorting to me.

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MrAMD_Fan

· #3 · Nov 28, 2009

if there is more than one stick of ram then take one out. Try that... the symptoms sound normal for a motherboard or ram problem on a laptop. I've worked on them for 10yrs and have seen that so many times. One thing that works sometimes with the dell laptops is to take the battery out and unplug the power and hold the power button down for about 30sec. then hook the ac adapter only (no battery) and try again, see what happens...

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Rayzer76

· #4 · Nov 28, 2009

http://www.laptopjacks.com/view_part...k-TS71525.html

i'd bet it's the jack. seen it too many times. If you look into the jack, you can prolly see that the prongs arent gonna make contact any more.

As for disassembly, laptops are easier than they look. Go slow, don't mix the screws, ay them out in order or grouped.

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steeda50

· #5 · Nov 28, 2009

Does it have 2 sticks of ram? If so try each one by itself. Also try each one in each slot. Could be bad slot, or ram. Also try it with battery only, then try and take the battery out and use ac adapter only. Let me know once you tried all of that and what happened.

EDIT: Mramd Fan beat me too it.

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Clox

· #6 · Nov 28, 2009

If you remove the hard drive does it boot up? I've had several do the same thing and it was caused by a defective drive.

Sorry, I mis-read.....

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TurboTurtle

· #7 · Nov 28, 2009

Best way to tell if the jack is in need of replacement:

If the laptop is still assembled: With the lid closed, hold the laptop tightly, and press lightly down on the center of the jack with a screwdriver. Gently move the screw driver around, without putting pressure against the jack itself. If the jack moves, it needs resoldering/replacement.

If the laptop if disassembled: The jack will be slightly off kilter to the motherboard is the damage is light, or can be moved easily by gently touching it.

Additionally, try this. Grab a multimeter, and attach the power probe to the center of the jack, then connect the ground probe to any of the screw holes. I personally like setting the multimeter to check for resistance with this situation.

As for disassembly itself, just do this. Take a sheet of paper and sketch a rough drawing of the bottom of the laptop, marking the screw holes. As you remove the screws, tape the screws to the corresponding circle on your drawing.

Do this for the bottom, the shell, the motherboard, etc. That way, you know exactly where all of your screws are and where they go.

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MrAMD_Fan

· #8 · Nov 28, 2009

Quote:

Originally Posted by TurboTurtle

Best way to tell if the jack is in need of replacement:

If the laptop is still assembled: With the lid closed, hold the laptop tightly, and press lightly down on the center of the jack with a screwdriver. Gently move the screw driver around, without putting pressure against the jack itself. If the jack moves, it needs resoldering/replacement.

If the laptop if disassembled: The jack will be slightly off kilter to the motherboard is the damage is light, or can be moved easily by gently touching it.

Additionally, try this. Grab a multimeter, and attach the power probe to the center of the jack, then connect the ground probe to any of the screw holes. I personally like setting the multimeter to check for resistance with this situation.

As for disassembly itself, just do this. Take a sheet of paper and sketch a rough drawing of the bottom of the laptop, marking the screw holes. As you remove the screws, tape the screws to the corresponding circle on your drawing.

Do this for the bottom, the shell, the motherboard, etc. That way, you know exactly where all of your screws are and where they go.

I just did a search for this laptop and it looks like it does have problems with that jack. Making a screw map (that is what i call it) is a great way to get screws back in where they go. I used to work on toshiba laptops and they had so many different length screws, so that was essential to avoid damaging the motherboard.

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