Quote from: Photon939 on May 17, 2015, 04:35:17 PM

When you say "Usb port is not recognizable although the win 7 pc i have found it as serial converter." do you mean it comes up as a usb serial converter or is windows saying the usb device was not recognized? I do know several people have had issues with the FTDI usb->TTL uart chip dying.

Sounds like everything else is working from your descriptions. The LED should blink when power is turned on, then blink fast a few times and go solid light. That means the hashing ASICs have passed the self test.

Answering to post i must said that lighfoot helps me somehow by PM. Thats for the member who asked.
The other thing now.
The win7 OS recognize it as serial converter. When i try to connect with bgminer it says "no device" or something like this.
Then i give the device manualy as \\.\COM3. After a couple of seconds the bgminer gives errors and try to reset the usb.
After many tries i didn't manage to make it work. I don't know where to search.
Also i changed the eeprom U10 with one from jalapeno and lost the COM3 port detection.
I put it back and i have again the COM3 port available.
I'm not sure but is it possible to check somehow if ARM controlers are working or not?
Any help would be appreciated