Bought 3 of these drivers from DX, they are the new NJ-18 design, and came on blue pcb.
I soldered one and it didn't work, so I tested the other 2 without soldering, none of them seem to work. However if I bypass the the mode chip (detailed here: http://www.cpfmarketplace.com/mp/showpost.php?p=2068426&postcount=32) they all work in single mode, but I need modes!
This is where I am taking led negative from:
It's basically the single leg of that chip, measuring with a voltmeter reports zero volts, however on 2xaa supply the other 2 legs of that chip are showing ~2.5 and ~3.5v, but nothing from the leg I'm testing.
I've worked with loads of drivers recently and not had dead ones at all, seems odd I would have 3 in one go.
I soldered one and it didn't work, so I tested the other 2 without soldering, none of them seem to work. However if I bypass the the mode chip (detailed here: http://www.cpfmarketplace.com/mp/showpost.php?p=2068426&postcount=32) they all work in single mode, but I need modes!
This is where I am taking led negative from:
It's basically the single leg of that chip, measuring with a voltmeter reports zero volts, however on 2xaa supply the other 2 legs of that chip are showing ~2.5 and ~3.5v, but nothing from the leg I'm testing.
I've worked with loads of drivers recently and not had dead ones at all, seems odd I would have 3 in one go.
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