Hi
How did you fix this problem of this topic ...
http://forum.arduino.cc/index.php?topic=159901.0
...because I'm in the same case:
after short circuit, "avrdude: stk500_recv(): programmer is not responding" in the IDE and the reset button don't make the led blink. smiley-mad
Please help me !! smiley-cry
Bonjour666
Moderator edit: session id removed
up please !!! 
@Bonjour666, other than the USB cable do you have anything connected to the Arduino?
Hi
Yes I had a ac/dc adaptator plugged.
Thanks very much for your help!
And when the short circuit occured, my acer tablet (wich was connected to my arduino through the USB cable) shutted down.
Hi,
Bonjour666:
Yes I had a ac/dc adaptator plugged.
I mean right now not when the trouble first started. You should try to simplify the situation as much as possible. That means, if you can, disconnect everything from the Arduino except the USB cable then try to upload a simple sketch like Blink.
Does your board pass this test...
http://forum.arduino.cc/index.php?topic=73748.0
Bonjour666:
And when the short circuit occured, my acer tablet (wich was connected to my arduino through the USB cable) shutted down.
I suggest getting an inexpensive powered hub. It will help to protect your computer from Arduino related trouble.
I tried to send sketch (in particular Blink) with the AC/DC adaptator and the without it. I also tried trough a powered USB hub ad directly in a USB port. But in all case, without any results 
I'm sorry but for the moment, I don't have time to try the test because tomorrow and until friday I'll pass my exam baccalauréat (I'm French 
). But as soon as I can, I will try it!
Thanks very much for your help!!!
Hi
I have a mac so I don't thinks it's a driver trouble and I don't know how to do after the sixth step
Ok coding I tried the test but my messages aren't echoed back 
What do I do now ??
Do any other USB devices (like a thumb-drive) work on the USB port you are using for the Arduino? We need to make certain the problem is not with the computer.
Does the USB cable you have been using with the Arduino work with other USB devices? Or, if you can, try the loop-back test using a different USB cable. We want to make certain the problem is not something simple like a damaged cable.
Ok I' tried with another cable the test but without any result. When I type whatever, nothing happens or appears in the serial monitor.
When you click the reset button on the Arduino, does the LED labeled "L" blink a few times?
Hi Coding
No when I click on the reset button, nothing happens. Can you connect to this: http://luaevat.perso.sfr.fr/dsd/chatango_arduino.html
and tell me when we can start. It should be faster and more practical.If we find a solution, of course I will copy it here 
Thanks very much
The Loop-Back Test from Reply #5 tests the little square chip right behind the USB connector. There are essentially two reasons the Loop-Back Test fails: 1. That tiny chip has been erased. In this case, you can recover from the problem by reprogramming that tiny chip. 2. That tiny chip has been damaged. In this case, the only way to recover from the problem is to replace that chip.
The test in Reply #12 tests the big chip. There are essentially two reasons that test fails: 1. The big chip has been erased. In this case, you can recover from the problem by reprogramming it (or buying a preprogrammed replacement). 2. The big chip has been damaged. In this case, the only way to recover from the problem is to replace the chip.
In Reply #7 you wisely tested the only other potential problem. Unfortunately, that test also failed.
I have bad news. I believe your Arduino has died. You could try reprogramming the two chips. Were I in your shoes, unless Arduinos are very expensive in France, I would not bother. I don't think it is worth the time.
Bonjour666:
Can you connect to this: http://luaevat.perso.sfr.fr/dsd/chatango_arduino.html
and tell me when we can start.
That's embarrassing. I just realized it's a chat window.
Hi
I just noticed that putting a jumper like in the photo, the L led is on.
And I have also noticed that there is something weird on the board.
Hi,
Bonjour666:
I just noticed that putting a jumper like in the photo, the L led is on.
Interesting experiment. Why did you put a jumper there?
As far as I can tell, the jumper connects SCK (Serial Clock) to RESET. SCK is connected to the L LED and RESET is held at 5V by a pull-up resistor. Unfortunately, all that tells us is that the board is getting 5V on RESET and that the L LED still works.
And I have also noticed that there is something weird on the board.
Dropbox - Error - Simplify your life
That does appear to be physical damage to the trace. You could try very carefully cleaning around the trace with an sharp knife. This is how it should look...
I put a jumper here because I realised that putting my finger (I'm in the south of the France so it's warm and I'd my hands clammy) on the six rods makes works the L led. Well, I'm going to try what you suggest me and if it still doesn't work, I'll buy a new one =(
