p4p800 dlx and usb-bracket

  • Thread starter Thread starter Thorsten Quast
  • Start date Start date
T

Thorsten Quast

Hi,

anybody using all of the 8 USB-Ports on the P4P800 DLX? I installed a
USB-Bracket on the USB78 header an got a lot of smoke and flames near
the
IE1394_2 header when I powerd up!?! After disconnecting the bracket
and
repowering everything seems to work fine...

Any ideas?

Thorsten, now without P4P800 DLX due to warranty service...

Where´s my 1st posting gone (sorry if double...)?
 
"Thorsten Quast" said:
Hi,

anybody using all of the 8 USB-Ports on the P4P800 DLX? I installed a
USB-Bracket on the USB78 header an got a lot of smoke and flames near the
IE1394_2 header when I powerd up!?! After disconnecting the bracket and
repowering everything seems to work fine...

Any ideas?

Thorsten, now without P4P800 DLX due to warranty service...

Where´s my 1st posting gone (sorry if double...)?
Click to expand...

Well, I'd say you miswired something involving power signals. Somehow,
either a +5 or a +12V got into contact with GND. If you took careful note
of which wires were burnt and on which pins they were sitting, it would
be possible to determine exactly what happened.

With cable assemblies, occasionally there can be wiring errors that
creep in during production. The making of cables might not be that
automated, so it is possible an error crept in during hand assembly.
You wouldn't realize how hard it is to make error free cable asswmblies
unless you try it yourself. As a young engineer, I was annoyed one day
to find a badly produced cable assembly coming from our prototype
manufacturing shop. I sat down and proceeded to make 16 cable assemblies
by hand myself. I was very careful, and still managed to make one of
them wrong. It was a humbling lesson and taught me the importance of
QC inspection for such stuff.

HTH,
Paul
 
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