DDA Master Channel Noise

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Aniol1349

Well-known member
Joined
Jan 16, 2012
Messages
103
Location
Deep forest
hey,

https://youtu.be/yL8Is8Dvhr0 << Have a look to this :facepalm:

I just recapped DDA Q2 Master Module and after plunging it back in I have loads of noise coming out for the L and C bus.

Seems like the Left bus has 6dB loss of signal and sounds slightly out of phase. It also makes the speaker almost pop out from the case.

The Centre bus is completely distorted, even crossing over into the L bus.

Right bus works perfect.

I have increased the value of the decoupling caps from 100uF to 220uF. The rest was just replaced by same values.


Any ideas what went wrong?

Cheers
 
check you soldering, make sure you did not damage any solder traces/ components. Are you sure you increased the correct caps?
 

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