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Several Channels Not Working


mryan23
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I just completed building my kit.  For some reason channels 3, 11, 12, 13, 14, and 15 don't work.  I would like to fix this without sending it to LOR if possible.  Does anyone know what the problem could be?

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Backward chip, soldering, wrong parts in the wrong place, The planets are not aligned properly...

 

Sorry, but that is kinda like asking "how long is a piece of string?"... the answer is, "hold it closer to the phone so I can see"   :P

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There are many things that can go wrong, but backwards chips are likely. Check the opto-isolators (the white chips, at least on my older boards). The ones one the left need to be mounted one way, and the ones on the right are opposite.

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Dumb as this sounds....  do a master reset on the board (assuming the chips are in correctly) many a board is "weird" until a master software reset is done.

 

Greg

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