EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: Tony_G on August 17, 2024, 08:01:30 pm
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Hey All,
Before I head out and buy a PCI or ISA video card to test, I thought I might ask here if anyone has dealt with this before.
My DolchPac 65 seems to have a video issue - I've removed all the cards, the LCD driver panel and the unit seeks the floppy drive so I think it's posting. This is what I see on the motherboard VGA output:
(http://i.imgur.com/UP1EyUGm.jpg) (https://imgur.com/UP1EyUG)
I really think that the issue is going to be in the motherboard video (which will basically mean a swap of the CI6BM SBC (https://theretroweb.com/motherboards/s/tmc-mycomp-mynix-ci6bm-ver.-1.0)) but I'm open to any suggestions - Including a new SBC, just need it to support PCI and ISA cards as I'm using the unit to run a HP Viper ISA card in it)
Thanks,
TonyG
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Just an update - I managed to find a old machine here that had a Diamond Multimedia PCI VGA card in it so I grabbed that, dropped it in and the machine posts correctly.
Looks like the video part of the CI6BM has failed, which is annoying unless anyone has a suggestion of addressing it as those boards are going for "collector" money apparently...
TonyG
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I remember curiousmarc messing with Dolch earlier.
Probably a solder crack somewhere. This is common with these long PICMG SBCs.
I suppose you could re-solder the chipset, but it is probably a BGA. Difficult to do.
It would be better to buy a new full size PICMG 1.3. But finding a compatible one may be difficult.
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Thanks - It is a "billion" pin package so I'm not even going to try and source a replacement.
I did try pressing on the board to see if anything changes but that wasn't successful.
I think you're right and I'll need to source a replacement. Thanks again though for the reply.
TonyG