[Solved] LCD not working & TP1 not adjusting..

• backdoorranky

  Posts 68

  Joined: Jun 21st, '16, 10:33

  Mar 10th, '17, 23:10

  Holding enter and turning on NAVA: I do not get "TM2 adjustment process". I try adjusting LCD contrast and get nothing. I try adjusting TM2 to measure +5V at TP1, but only measure -.005V
  
  Holding Start+stop and powering on NAVA, following pressing Start + Enter: I get nothing on the LCD.. Adjusting TM3 does nothing..
  
  Checking sounds despite non-working LCD: The ride completely distorts when i increase pitch, almost sounds like a SID chip or something, then distorts completely the higher pitch..Hi hats sound distorted and not at all like 909. Crash is extremely quiet even with level knob on full. I am missing IC43, but that's for the Hi Tom..
  
  Also each time I power on the Nava, the start key triggers different instruments it seems like..I've never owned a 909 but this doesn't sound like correct behavior.
  
  I soldered the LCD on one side with the header pins, and left the plastic on them, that should be fine right? (Can be seen in these pictures http://imgur.com/a/Aojuq)
  
  Any ideas of what to check for?
  
  Very much appreciate the help/input I've got so far, but I'm afraid I need to ask for more!

  Last edited by backdoorranky on Mar 13th, '17, 05:39, edited 1 time in total.

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