cube48 Posted April 5, 2015 Report Share Posted April 5, 2015 (edited) My freshly finished MB Seq V4 with Wilba's standard CS is working nicely except that a few LED's are constantly lit. Affected LED's are: Track Group 3 Track 2 Track 4 Trigger Layer B Parameter Layer B Step View (fully lit) Solo They are all a bit dimmed (except Step View) and they become fully lit when their button is activated. There is 2.27V going through these dimmed but lit LED's. I can't see any bad solder joints. The only clue I've come to is that all affected LED's are assigned to pin 1 of various SR's (shift registers?). Other normally working LED's are using different pins. I have no idea if this can be related somehow. Here is the excerpt from the config file. ################################################## # LED assignments to DOUT pins # SR = 0: LED disabled # SR = 1..23: directly forwarded to DOUT pin # SR = M1..M8: forwarded to a 8x8 LED matrix ################################################## # SR Pin LED_TRACK1 M7 2 LED_TRACK2 M7 1 LED_TRACK3 M5 2 LED_TRACK4 M5 1 # SR Pin LED_PAR_LAYER_A M4 2 LED_PAR_LAYER_B M4 1 LED_PAR_LAYER_C M4 0 # SR Pin LED_BEAT M1 1 # SR Pin LED_MIDI_IN_COMBINED 0 0 LED_MIDI_OUT_COMBINED 0 0 # SR Pin LED_EDIT M5 3 LED_MUTE M6 3 LED_PATTERN M6 2 LED_SONG M7 3 # SR Pin LED_SOLO M6 1 LED_FAST M6 0 LED_FAST2 0 0 LED_ALL M7 0 # SR Pin LED_GROUP1 M8 3 LED_GROUP2 M8 2 LED_GROUP3 M8 1 LED_GROUP4 M8 0 # SR Pin LED_TRG_LAYER_A M2 2 LED_TRG_LAYER_B M2 1 LED_TRG_LAYER_C M2 0 # SR Pin LED_PLAY M1 3 LED_STOP M3 3 LED_PAUSE M2 3 LED_REW M3 2 LED_FWD M1 2 LED_LOOP 0 0 LED_FOLLOW 0 0 # SR Pin LED_EXIT 0 0 LED_SELECT 0 0 LED_MENU 0 0 LED_BOOKMARK 0 0 LED_SCRUB 0 0 LED_METRONOME 0 0 LED_RECORD 0 0 LED_LIVE 0 0 LED_UTILITY 0 0 LED_COPY 0 0 LED_PASTE 0 0 LED_CLEAR 0 0 LED_UNDO 0 0 # SR Pin LED_STEP_VIEW M3 1 LED_PAR_LAYER_SEL 0 0 LED_TRG_LAYER_SEL 0 0 LED_TRACK_SEL 0 0 Any tips or suggestions are welcome. Thanks! Edited April 5, 2015 by cube48 Quote Link to comment Share on other sites More sharing options...
Rowan Posted April 5, 2015 Report Share Posted April 5, 2015 If there aren't any bad solder joints check that all the 74HC595 shift registers are seated correctly in there sockets and there aren't any bend pins that have failed to make contact, assuming that you are using IC sockets. Quote Link to comment Share on other sites More sharing options...
cube48 Posted April 5, 2015 Author Report Share Posted April 5, 2015 Thanks a lot! And especially to smashtv who directed me via PM to the right place and gently pointed out the LED 31 holes being flipped. My LED was indeed flipped and putting it into right orientation did the trick. I completely missed that one during the final LED dropping stage. Now is all fine. Thanks again! Quote Link to comment Share on other sites More sharing options...
cosmosuave Posted April 6, 2015 Report Share Posted April 6, 2015 Right on man... that shit can get frustrating... I remember that during my build that one was oriented opposite to the others and not to make that mistake... Quote Link to comment Share on other sites More sharing options...
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