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hutchijw
08-07-2010, 03:41 PM
On my Co-Op 595 board (Brians), channels 1 through 33 are fine, channels 32 through 64 - Nothing. No LED's and no output. Im confident it's not a cable or program issue as my 2 other boards work fine.

Thoughts or suggestion on where to start troubleshooting?

hutchijw
08-07-2010, 03:43 PM
correction - channels 33 through 64

dirknerkle
08-07-2010, 03:44 PM
Check your jumpers, then make sure the chips are in the right way.

hutchijw
08-07-2010, 04:15 PM
Thanks - Now channels 32 through 47 works. A chip or two were backwards. The last 16 channels are still not working. Would one bad chip prevent all 16 from not working or only 8?

dirknerkle
08-07-2010, 04:31 PM
Possible, but those chips are pretty hardy. Check the solder points on the last two sets of chips (both the 595 and 2803) as well as the "feed" lines that go between the 6th and 7th 595 chip.