Presonus 1818VSL schematic?

[kingkorg]

Anyone got schematic for this one? My live recording gear is based on these, and two channels just failed on me. I have couple of sessions next week, so any help would be appreciated.

 

[Khron]

"Of course" not. Which channels?

If they're adjacent, it may or may not be one of the codecs. Now that i think about it though, one belonging to a friend of mine had a couple channels act up; I ended up swapping two of the codecs among them(!), no new parts, and it came good after that.

 

[kingkorg]

Wow, didn't see that coming. The first two. Will check it out, thanks!

 

[Whoops]

Did you contact Presonus for the schematic?

Some years ago I got a schematic from them

 

[Khron]

Fat chance - they couldn't even be bothered to provide the firmware chip contents (not the source code) for an 1818VSL I fought with a while ago.

Did you contact Presonus for the schematic?

Some years ago I got a schematic from them

 

[kingkorg]

Nope, it is virtually impossible to get anything from Presonus. The unit is still on the bench.

 

[Khron]

Didn't get the chance to swap any of the codecs yet?

 

[kingkorg]

Didn't work ;(

 

[Khron]

Hmm... Might be time to whip out the scope and take a peek at the clock signals, to begin with? Mclk, Bclk, LRck; whatever serial data is or isn't there, won't look like much.