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Motherboard failure???

Discussion board for Mackie's d8b Digital Console users.

Motherboard failure???

Postby Jim_Anderson » Wed Nov 25, 2009 7:07 pm

Hello,

Recently I unplugged my d8b without shutting it down first. When I powered it back up, I received the Error 43... Here is what I found after following the Error 43 recovery advice listed elsewhere on this forum.

1. The floppy light is always on, and destroys any disk I put into it. I replaced the floppy and now it works.

2. The Hard drive seems to have failed. I put it in a PC and it claims that it is unformatted. I replaced it with a 20Gb drive.

3. After close inspection, I noticed that the top of one of the capacitors on the motherboard was bulging open. It looks like it may have failed. Bad Motherboard?

4. So then I tried to reinstall the OS. When loading the first disk, the following is flashed briefly (I had to use a video camera to read the subliminal message):
------------------------
-- Mackie OS Loader V3.0 --
Starting in Real Mode
Enabled A20
In Protected Mode
Heap Init
0010FFF0 to 87FFFF18 <-- not sure if this is right
Remove disk and press esc key to reboot

loading application
---------------------------
This is followed by:
----------------------
Starting TCP/IP Socked Layer

GENERAL PROTECTION FAULT
GENERAL PROTECTION FAULT
GENERAL PROTECTION FAULT...(repeated down the screen.)
-----------------------

So,
Any ideas?
Is there any one who could sell me a replacement CB50-BX motherboard for less then the $300 that Mackie is charging?
Am I missing something obvious?

Thank you for any advise,
Jim Anderson
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Re: Motherboard failure???

Postby MikoWarhol » Sun Jul 22, 2012 8:36 pm

I have the same issue any body that could help would be appreciated. thank you.
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Re: Motherboard failure???

Postby MikoWarhol » Mon Jul 23, 2012 11:28 am

Figured it out it was the all too common loose ribbon cable.
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Re: Motherboard failure???

Postby Dreamsequence » Wed Jul 25, 2012 6:17 am

I thought I read somewhere that the General Protection Fault was an indicator of a corrupted or incorrect BIOS version load. If you can regenerate the correct version level, try a new set of disks and reload. Floppys deteriorate even just sitting around.
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Re: Motherboard failure???

Postby FrankH » Wed Jul 25, 2012 9:13 pm

If it isn't a loose ribbon cable, go here:
http://www.sonido-7.com/d8b/index.html
...and read #2 about resetting your BIOS and possible battery replacement before going through the process of reloading V5 software. Make sure you use the BIOS doc that matches your motherboard. It's all in the article.
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Re: Motherboard failure???

Postby jorgea » Sun Aug 12, 2012 7:55 pm

Have you resolved this issue yet? If yes, what did you do?
























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