No charge from magsafe adapter

I hate to post a new topic when it looks like hundreds of people have this problem, but none of the methods posted seem to have worked for me.
The other day I was using my macbook when i realized that the battery power was decreasing even though it was plugged in. I checked the power source, all seemed connected well, but the little green/amber light wasn't showing up on my magsafe adapter.
Eventually all of the battery power was used up and the computer turned off.
I have plugged this cord into about a hundred different places, tried other people's power cords... nothing.
I took the computer to a genius bar a few hours ago. They plugged in their adapter to my computer, and miraculously, it started charging again. Then they tried my adapter, and it, too, started working. We charged it up to 10% and then I was on my way, feeling a tad like an idiot, since everything seemed to work just fine at the genius bar.
Now I am back at home, and the **** thing isn't charging at all... again. And the 10% charge that I had saved up at the Apple store is gone... again.
No charge, no anything.
What should I do?

My MacBook works only with the Adaptor....and I've bougth it in the july 2007...
From the shell..if I write:
ioreg -w0 -l | grep Capacity
the result is:
| | "MaxCapacity" = 0
| | "LegacyBatteryInfo" = {"Capacity"=0,"Amperage"=0,"Cycle Count"=0,"Current"=0,"Voltage"=0,"Flags"=1}
| | "CurrentCapacity" = 0
My model of Battery begins with A1185....so battery serial number does not match any of the ranges listed in the Battery Exchange Program (Apple is voluntarily recalling the affected batteries and has initiated a worldwide exchange program to provide eligible customers with a new replacement battery, free of charge)...can you HELP ME?
https://support.apple.com/ibook_powerbook/batteryexchange/main?id=qp

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Copied from my previous post in this thread.
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My MacBook pro (2007 I think) does not charge fro the magsafe charger. I took the battery to the apple store, told them the problem, and asked them to tell me if the battery needed replacing. They said yes, and I bought a new battery.
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You are correct. Good point on the charging.
Given that the MPB works without the batt, it sounds more like the MagSafe board than the power adapter:
http://www.ifixit.com/MacBook-Parts/MacBook-Pro-15-Inch-Model-A1211-Left-I-O-Boa rd/IF185-060?utm_source=ifixit_cart&utm_medium=cart_product_link&utm_content=pro duct_list
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Hello brixton81,
Thank you for providing so much information about what you are experiencing with your MagSafe adapter. I recommend reviewing the article below to troubleshoot this issue. You have already gone through some great troubleshooting steps, some of which are in the article, and you can skip those since you have already taken them:
Apple Portables: Troubleshooting MagSafe adapters
http://support.apple.com/kb/ts1713
Thank you for using Apple Support Communities.
Best,
Sheila M.

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Will apple replace the L shape MagSafe Adapter? The pins are sticking causing my late 2011 macbook not to receive charge.

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my ginger,
I did the shift-control-option + power SMU reset. (My Macbook has an internal battery so I couldn't remove it.) Nothing changed as a result of that though.
I checked to see if the battery and adapter are being recognized. This is what it said (cut-and-pasted below). Let me know what you think.
I wonder if the wattage difference in the adapters is what is making the difference... And if so, what that might mean in terms of damage done. Hmmm.
Thanks again for your help. Much appreciated.
Battery Information:
Model Information:
Serial Number:          W0952KWJU9X7A
Manufacturer:          SMP
Device name:          bq20z451
Pack Lot Code:          0000
PCB Lot Code:          0000
Firmware Version:          0103
Hardware Revision:          000a
Cell Revision:          0130
Charge Information:
Charge remaining (mAh):          3760
Fully charged:          No
Charging:          No
Full charge capacity (mAh):          4684
Health Information:
Cycle count:          442
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          126
Voltage (mV):          12054
System Power Settings:
AC Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          0
Display Sleep Timer (Minutes):          10
Wake On AC Change:          No
Wake On Clamshell Open:          Yes
Wake On LAN:          Yes
Current Power Source:          Yes
Display Sleep Uses Dim:          Yes
Battery Power:
System Sleep Timer (Minutes):          10
Disk Sleep Timer (Minutes):          0
Display Sleep Timer (Minutes):          2
Wake On AC Change:          No
Wake On Clamshell Open:          Yes
Display Sleep Uses Dim:          Yes
Reduce Brightness:          Yes
Hardware Configuration:
UPS Installed:          No
AC Charger Information:
Connected:          Yes
ID:          0x0000
Wattage (W):          0
Revision:          0x0000
Family:          0x0000
Serial Number:          0x00000000
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Category: Hardware related
Instructions: https://support.apple.com/kb/HT3964
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No charge from magsafe adapter

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