Digital Karaoke Jukebox won't post video

Someone brought in a CAVS Digital Karaoke Jukebox model JB-199 that won't post video.

System spec - 2800mhz celeron processor - 258mb of ddr ram - agp video card

I've tested the psu, which had normal power readings.  I tested the CPU and RAM outside in another box and both worked fine.  I've tried putting in 2 different agp video cards, and 1 pci video card to no avail.

It has a Gigabyte GA-8IG1000MK motherboard in it.  I suspect the motherboard is bad... does anyone know if I need to get the motherboard replacement from CAVS?  Do they load a proprietary bios or something?  Or can I just get a standard gigabyte ga-8ig1000mk board to replace it?  Does anyone else have a possible solution short of getting a motherboard?

I've also tried putting in different ram, different hard drive, replaced the CMOS battery...


Help!
kmlitAsked:
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CallandorCommented:
If the motherboard says Gigabyte GA-8IG1000MK, it is very likely that you can just replace it with another one.  A custom BIOS for a vanilla motherboard is extremely unlikely, as a BIOS is very tightly integrated with the motherboard (you have to be careful what BIOS image you flash or you will end up with a paperweight) and the custom programming is probably in the operating system, on the hard drive.

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kmlitAuthor Commented:
They claim to use some custom firmware for some of the stuff, I had to have the customer send back the unit to the manufacturer.
kmlitAuthor Commented:
Yeah supposedly they use some custom firmware based off of the motherboard serial, but I decided to not deal with the possible hassle of using a non-compliant motherboard.  They were the only ones selling the particular model.
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