Fried Board on 50$ robot

[SamA]

My son plugged in the 6v battery into his board and the LED did not light up. everything looks correct. So I took a 4aa battery pack and touched the red and black lead to both sides of the LED to see if it would light. IT did not. Now when he tested his board and the two outter solder bridges running on the sensor inputs there it shows on his ohm meter they are connected. It show one is supposed to be ground and the other 5v power. Did I fry my sons board? And if I did which component is most likely should I replace? And lastly is there a place I can buy this board set up this way? Or a place I can have this one tested. I live in the San Diego, North county area. Thanks for any help.  Signed Dad feeling bad.

[Conscripted]

Sorry to hear about your trouble. When the board is built correctly the LED does not light up with power applied. It is controlled by software. Connecting 6VDC to the LED directly may have damaged it though. My advice is to get a magnifying glass and take a really close look at all of the solder traces on your board. My guess is that there was a small mistake during the soldering that has connected the two power rails.

Fixing the power rails shouldn't be to hard to fix once it's found. Replace the LED and give it a try. If the microcontroller is damaged it's easy enough to replace.

Good Luck.
Conscripted.

[SamA]

Thanks for the help. I replaced the LED and everything is fine.

[Conscripted]

your welcome. Let us know if you need anything else.

Conscripted