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J.4 / J.5 shorted, and F.5 / F.6 shorted?

 
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pjc30943



Joined: 02 Dec 2005
Posts: 220
Posted: 03 September 2008, 22:33 PM    Post subject: J.4 / J.5 shorted, and F.5 / F.6 shorted? Reply with quote
There appears to be solder directly connecting pins 91 and 92 (F.5 and F.6) on my 1280n dev board. I'd guess this not intentional; others don't have this, right?

Second, J.4 and J.5 are shorted together somewhere on the board, but I can't seem to trace where this occurs. Any thoughts or past experiences?
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dkinzer
Site Admin


Joined: 03 Sep 2005
Posts: 2683
Location: Portland, OR
Posted: 04 September 2008, 2:30 AM    Post subject: Re: J.4 / J.5 shorted, and F.5 / F.6 shorted? Reply with quote
pjc30943 wrote:
There appears to be solder directly connecting pins 91 and 92 (F.5 and F.6) on my 1280n dev board.
That sounds like a solder bridge that was not detected. It can be removed with solder wick.

pjc30943 wrote:
J.4 and J.5 are shorted together somewhere on the board
Perhaps it would be most expeditious for us to send you a new board. We can take a look at yours later.
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pjc30943



Joined: 02 Dec 2005
Posts: 220
Posted: 04 September 2008, 5:29 AM    Post subject: Re: J.4 / J.5 shorted, and F.5 / F.6 shorted? Reply with quote
dkinzer wrote:
That sounds like a solder bridge that was not detected. It can be removed with solder wick.


I wanted to verify that this was not intentional--eg. some Vref trick going on, etc. Since this isn't normal, I'll remove it.

dkinzer wrote:
Perhaps it would be most expeditious for us to send you a new board. We can take a look at yours later.


Thank you for the offer. Since a new board would be fairly time consuming to alter to the current one's state, I'll just avoid using one of J.4 / 5, and in particular avoid setting both to output...
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