every fine but no sound output

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stoltenberg
 
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Joined: Sat May 25, 2013 2:31 pm

every fine but no sound output

Post by stoltenberg »

hi there.

(my box isn't from the adafruit store, it's from the german shop) despite thorough preparations unfortunately I had not much luck with my x0xb0x. I spend a lot of time and patience, soldered very carefully and stuck to the manual. after that really all leds, switches and control functions working perfectly (even midi, usb, sequencer ...), but no sound :-(

absolutely no sound, not even a click or a ground noise. (also tested the line-in). i went through everything several times and searched for typical errors like cold spots or wrong polarity, but I can not find anything suspicious. i do not know where I could go?
when measured by the reference points I have discovered some anomalies:

IC12: 4 pins have 5v instead of 12v, 2 pins 0v instead of 11,7v
IC11: 3 pins have 5v instead of 2v
IC9: 4 pins have 5v instead of 0v, one 0v instead of 5,3v
(i've found some other differences, but these were the most conspicuous)

i would appreciate any form of help very much. thank you!

jan

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antto
 
Posts: 1636
Joined: Thu Apr 15, 2010 3:21 pm

Re: every fine but no sound output

Post by antto »

do you have 12V 5.33V and Ground on J4?

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