Marxon Posted April 9, 2013 Report Posted April 9, 2013 (edited) Hi Midiboxers,after fixing my voltage issue, i still have a output problem :(It is very low and there is a lot of background noise:Testtone:test.mp3I allready checked:5V @ Ic1 Pin 1,7; Ic2 Pin 1, 3, 6, 9+12V @ Ic3 Pin 4; Ic6 Pin 4-12V @ Ic3 Pin 11; Ic6 Pin 11polarity of c1, c3, c5, c7, c11 ,c16, c18, c20 ,c22, c24, c26, c31, c32, c33, c34 = checkedreplaced Ic3, Ic6 = no differenceFM-Interconnection test = passedAny suggestions what could be the fault?May some other capaciator?Thanks for your helpBest regardsMarxon Edited April 9, 2013 by Marxon Quote
Marxon Posted April 9, 2013 Author Report Posted April 9, 2013 (edited) Hi again :smile:I was reheating every soldering when i noticed a missing trace on my board.It is the 5v trace which goes to the bridge and from there to the rest of the board.But like i said in my last post there was 5v on Ic2 Pin 1, 3, 6, 9even without the missing trace?So the new question is: where do the 5v come from? Edited April 9, 2013 by Marxon Quote
Marxon Posted April 9, 2013 Author Report Posted April 9, 2013 It´s me again...But there are good newsFinally it works now :smile:Good output, low background noiseI simply forgot to connect audio gnd.Slap in my face...And the 5v issue: who cares ;) Quote
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