D8B Booting Partially

[csp]

Markd,

I spent quite a bit of time tonight going through the initial topic looking for the Brain Board information and found what I have posted below.

I should have advised earlier that with the initial topic, because it has reached the maximum viewing limit, if you want to look at it you will unfortunately have to go backwards, by starting at about page 58 (or a page around that number that opens) and then progressively go backwards and if you get a failed page, then open a pge a couple of pages higher and then slowly open the lower pages again. A shame that I can't save and export the entire 60 pages and then print them off as it would then be reasonably easy for me to flip through them to supply information, I could also possibly copy the lot so as to be able to supply anyone who needs the topic information to help them with a problem obtain the topic via a file transfer programme, USB stick or whatever.

Around page 53 I came across the below. I have not edited it so most of it will probably make no real sense, but there is a good description of the Brain Board LEDs and what they should be doing and how they change in colour when they become faulty and what I discovered when they did.

The posting:

The Brain Board booted OK with the sold Red and flashing Green LEDs alight and the DSP board was super good in that it only showed the Red LED ---- could this extra cable clean have solved the problem !!!!!

After checking that there was mic signal on Fader 1 and on the Master Fader, I let the desk run for about 5mins, during which time I changed the Clock (Mackie Clock Card) from its 44.1k default to 48K. All LEDs were still OK.

I then swapped banks to the Tape Bank and via the external monitor raised all 24 faders (25 - 48) to about -30db. LEDs still OK and if speaking into the MIC (Fader 1 left open) I still had signal on the Master Fader, so all still OK.

While the desk was off I had re-installed the optical cables into OPT-8 card 1 - 8 .

I then turned on the HD24 --- all still OK --- so I hit play and played the song (all 4im 55secs of it) and at the end, all was still OK with the LEDs.

Leaving both the desk and recorder working, I connected the second optical cables to inputs 9 - 16 and then hit play on the same song.

At about 3mins into the song, for no reason all three LEDs on the Brain Board started showing --- super major fault as that indicated that the Brain Board's electroinics could not read or recoginse the presence of the board's EPROM, although there was still audio, none of the desk's faders did anything if moved, but if on the external monitor where everything looked as if there was no problem, raising/lowering any fader made that channel's level change acording to the fader's position. Why did the Brain Board for no reason fail while the DSP board still showed the Red LED.

I then shutdown the desk, waited a few minutes and re-booited. After booting the Brain Board showed only the Red and Green LEDs (all OK), but this time the DSP card showed both the Red and Green LEDs (an OK working state), BUT why was the Green LED showing this time ????

On checking, I had audio on the Mic. I then changed the clock to 48K and swapped inputs to the TAPE Bank and from the monitor raised all 24 faders to about -30db. I then left the desk running (the HD24 was off) for about 90 mins, checking the LEDs about every 10mins --- OK throughout.

During this standing time I connected the third set of optical cables, so that I now had all 24 of the HD24's tracks connected to the desk.

That is the end of the posting.

Combining this information with what I previously detailed for the DSP card should give you a fair idea as to what to look for if the two boards are preforming correctly or otherwise.

Trust all of this has helped you in your quest.

David