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  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Sun Oct 21, 2018 6:46 am    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
Here are all the mesurement from all the ICs
  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Fri Oct 19, 2018 2:15 pm    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
Yes I have an oscilloscope !
  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Fri Oct 19, 2018 2:15 pm    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
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  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Fri Oct 19, 2018 2:14 pm    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
Here are some pics of my PCB
  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Fri Oct 19, 2018 1:41 pm    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
I have 10.5v at the lm394 now...
I truly don't know what to do, I made 3 PCB at the same time, pluged the second one and still no sound is produced..
  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Fri Oct 19, 2018 1:19 pm    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
Thanks for the awnser,
I just checked all the power pins of all the ICs, and they are all getting between 11v and 12v, except the lm394 which is getting 0,5v...
  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Fri Oct 19, 2018 12:16 pm    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
The LM311p is getting pretty hot when under tension...
  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Fri Oct 19, 2018 10:38 am    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
I just replaced the LM394 with two BC547C, and still no sound what so ever...

What do I have to check to isolate the problem ?
Thanks
  Topic: Yusynth VCO no audio
MrSbarre

Replies: 11
Views: 8880

Post Posted: Thu Oct 18, 2018 1:52 pm    Subject: Yusynth VCO no audio
Forum:  DIY Hardware and Software » YuSynth
Hi,
I just finished building my first Yusynth VCO module, but I have absolutely no sound at the 4 outputs.
I'm using a LM394H (the one with the metal can).
The board is getting 12V (yes, I built th ...
 
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