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-   -   power distribution board red light stays on (http://www.chiefdelphi.com/forums/showthread.php?t=104736)

Jimmy Nichols 20-03-2012 08:04

Re: power distribution board red light stays on
 
Quote:

Originally Posted by Al Skierkiewicz (Post 1146577)
Jimmy,
That is not merely folded over. The transistor (or what remains) of Q5 blew away from the board taking the stripe with it.

Al, that is what it looked like to me. But what is strange is if you look at the CB next to it and at its transistor, Q6, the same black pastic housing is not there. So did they install a different transistor in that postition than in any of the other positions. Also, the trace was completed folded over the plastic piece was next to the wago terminal. I folded it back to try read the markings on the plastic.

EricVanWyk 20-03-2012 08:10

Re: power distribution board red light stays on
 
This is the 2009 revision of the PD. There was an error in the design of that circuit that required the rework of several thousand boards. It looks like you somehow got one that didn't go through QA correctly. This is the first time I've heard of this error "in the wild". The issue was permanently solved for the 2010 season.

Snip the trace that has been pulled up and make sure it isn't shorting to anything, then put some kapton or electrical tape over it. I'm really sorry that you had to deal with this.

Al Skierkiewicz 20-03-2012 08:15

Re: power distribution board red light stays on
 
Quote:

Originally Posted by Jimmy Nichols (Post 1146581)
Also, the trace was completed folded over the plastic piece was next to the wago terminal. I folded it back to try read the markings on the plastic.

That explains the LED being ON all the time except when you pushed on the board. I would follow Erik's suggestion, a sharp blade across the trace will make life easier. Double check the solder though, a simple hot iron should reflow the solder so it isn't a problem.

Jimmy Nichols 20-03-2012 08:24

Re: power distribution board red light stays on
 
Quote:

Originally Posted by EricVanWyk (Post 1146586)
This is the 2009 revision of the PD. There was an error in the design of that circuit that required the rework of several thousand boards. It looks like you somehow got one that didn't go through QA correctly. This is the first time I've heard of this error "in the wild". The issue was permanently solved for the 2010 season.

Snip the trace that has been pulled up and make sure it isn't shorting to anything, then put some kapton or electrical tape over it. I'm really sorry that you had to deal with this.

Great Thanks! We will try this tonight and see if we can replicate the issue.


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