07-10-2011 09:53 PM
I had the the 605 working yesterday but now the board isn't being registered by Windows 7 and the JTAG light doesn't come on. The CF LED is red and I'm not sure how hot the board is supposed to get but it is gettig to hot to touch. I'm thinking the board has gone kaput. Does anyone have any suggestions?
07-11-2011 09:21 AM
The symptoms that you describe indicate that you have a power short somewhere on the board. Possibly do to either overvoltaging the input supply or ESD damage.
07-11-2011 11:58 AM
Board is getting to hot to touch indicating that some component failure or short circuit in the board. Required to debug
As it indicated in previous post problem might be due ESD/voltage spikes.
Some times visual inspection helps to find out any conductive dust in the board. Also failed component is very hot and sometimes color will change to black. If you observe like that any component replace that component and try once.
07-11-2011 12:09 PM
Also failed component is very hot and sometimes color will change to black.
Suggest you wear safety eyewear when staring at the heated component(s).
-- Bob Elkind
07-11-2011 01:53 PM
Thanks for the help. Bob, I'd love to hear the story about the squirrel and the campfire.
So far, no smoke and no discoloration from any parts.
07-13-2011 01:27 PM
You should double check your jumpers. Maybe start from the default state of the jumpers from the UG. I had an issue with one of these boards in which it was showing errors in the device IDCODE when initializing my JTAG chain, which was fixed with a jumper. Also check if there are any connections shorting on board, there are a few tightly placed components by one of the SMA connerctors that could possible cause a short.
07-13-2011 01:39 PM
I'd love to hear the story about the squirrel and the campfire.
The squirrel didn't make it. :(