finished xoxbox no light no sound pls help!

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acidbuzz123
 
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Joined: Fri Nov 29, 2013 8:38 am

finished xoxbox no light no sound pls help!

Post by acidbuzz123 »

hey,
i just finished my xoxbox kit (xoxshop.de) but when i plug in the power, there is no sound and no led response :(
the only sound i can hear, is a click sound when i plug in my headphones.
unfortunately i don't have an oscilloscope, so i skipped the testing and tuning part from the instructions manual.
i only measured the correct voltages at j4 and tested the op amp.
its the first machine i build and I'm very thankful for any help!!!
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xlarge
 
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Joined: Wed Jul 11, 2007 2:02 pm

Re: finished xoxbox no light no sound pls help!

Post by xlarge »

What about the powerboard? Do you get all right voltages?

Edit; Right, you wrote you got all right voltages...

Morglurg
 
Posts: 14
Joined: Sun Apr 27, 2014 8:20 am

Re: finished xoxbox no light no sound pls help!

Post by Morglurg »

I'm working on the same kit as well. Check my progress here:
http://forums.adafruit.com/viewtopic.php?f=12&t=53258

You could power it up and use the inexpensive headphone to probe where the signal ends. Start at the VCO and then filter and so on. But it seems something might be off with the connection of the power to the rest of the synth since the leds don't light up.

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