PreenFM > preenfm2 and preenfm3

PreenFM2 new build, audio is mostly noise

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matrix12x:
If your soldering iron tip is busted, definitely get a new tip. Also, I suggest you buy some flux and use it to reflow the bad solder joints.

mckruithuijb:
Very curious if this is solved yet, I seem to have the same problem see also my post: http://ixox.fr/forum/index.php?topic=69844.0

Xavier:

The solder joints on the picture above are really bad.
I'm not surprised some bad junction may lead to bad communication between the MPU and the DAC.
The master DAC clock is around 20Mghz. Bad junction may lead to noise in the 20Mghz clock.
Without this clock the DAC cannot work properly.

Try to resolder the 8 DAC pins on both side.
If it still does not work, you can try the volume pot.
Then the audio JACK.

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