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- Aug 30, 2008
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I've got a batch of 9 faulty rkcstr drivers.
I am unable to pinpoint the the problem with them so I am looking for offers if anyone wants them. They all exhibit the same problem.
They will run for probably a maximum of 30 seconds, and the current will begin to jump around rapidly. The current never seems to jump above what it's set at, but below. It will continue to hop around 10-15mA and steadily decreases untill output current is at 0, then they stop working.
If you let them rest for a bit they will begin this process again. I seem to be having this problem with slightly more than 10% of the drivers, and it seems to be a problem with both fixed and adjustable, assembled and unassembled.
So i am guessing it's a problem with one of the components, probably not the resistors since the problem is with both fixed and adjustable.
I tried swapping parts of a good driver and bad driver but couldn't seem to single out the problem...(front side parts only tested)
My knowledge with electrical components is too limited for me to understand what could possibly cause it.
I'm open to offers on these if you think you can repair them...
should i accept an offer, i'm selling these AS IS.
I am unable to pinpoint the the problem with them so I am looking for offers if anyone wants them. They all exhibit the same problem.
They will run for probably a maximum of 30 seconds, and the current will begin to jump around rapidly. The current never seems to jump above what it's set at, but below. It will continue to hop around 10-15mA and steadily decreases untill output current is at 0, then they stop working.
If you let them rest for a bit they will begin this process again. I seem to be having this problem with slightly more than 10% of the drivers, and it seems to be a problem with both fixed and adjustable, assembled and unassembled.
So i am guessing it's a problem with one of the components, probably not the resistors since the problem is with both fixed and adjustable.
I tried swapping parts of a good driver and bad driver but couldn't seem to single out the problem...(front side parts only tested)
My knowledge with electrical components is too limited for me to understand what could possibly cause it.
I'm open to offers on these if you think you can repair them...
should i accept an offer, i'm selling these AS IS.
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