d8b Sound problems.

[salvaes]

Good news, after disassembling on almost all the plates, I have audio again, but not the whole table.
Disconnect each and every one of the cables several times, clean them, and reconnected them, and the sound returned, I just need to remove the analog in board and check that there is nothing wrong.

[salvaes]

After disassembling all the boards, several times, cleaning all the connectors, I have recovered the audio in all but two channels, 3 and 4.
Could it be that the operational of these channels could be damaged?
Since it is very curious that the operations of the analogue channels go two by two, and just two fail that are paired.

[Old School]

Hi,
Perhaps there is something wrong with or stuck on the mic/line switches? Try inputing 1/4" plugs as well as XLR.
Just a thought.

Have a blessed day in Christ,
Mike

[salvaes]

I think this is the culprit.

[anyhorizon]

Check for a cold solder joint on pins 4 and 8 on that IC first..

Peter

[salvaes]

Today I checked the pins 4 & 8, with the power connector, and I have continuity.
I bought, on ebay ic.
Let's see how it goes.

[salvaes]

After many diagnoses.
Try with a new codec board.
An analog board.
A dca board.
And a dsp board,
Still with the same fault and I do not understand anything.
Because for all the changes made it had to have been changed or solved.

That means that the fault is elsewhere.
But where?
All mixer works normally, except for channels 3 & 4

[salvaes]

This is guilty.
On the DSP board.
Once replaced, I have sound again in channels 3 & 4.
Everything else works perfectly.

[Petersueco]

How the hell did you figured out that was the problem??

[salvaes]

After buying all the cards, try one by one, I was discarding and the circle gradually was closing because following the schemes and an electronic friend in the end we could see where it failed.