View Full Version : channels 32 through 64 not working

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?

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

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

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?

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.