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Interesting VA0 Motherboard Factory Fix

Posted: Mon Jun 23, 2025 1:02 am
by Fullen
Hey friends, this is my first post here. I've been lurking for a while, but I recently acquired a new VA0 Japanese Dreamcast with a quirk that made me wanna ask around about it.

I got my hands on a third VA0 Dreamcast since I was trying a 20% overclock on the ones I had but those weren't compatible.
At any rate, the new one I got was made in 1998 by T. TKR (670-13748D). After getting it, I opened it up to give it a general cleaning and service. I noticed the screws all had that distinctive "new from factory" initial click to them, and seeing the console inside one can easily tell it hasn't been opened before.
The insides were pristine as well, but I still decided to open it up all the way to clear the little dust it had inside. After lifting the motherboard, I noticed this little hacky fix I haven't seen before in any of the Dreamcasts I've opened up. Seems like a manual fix for a design flaw or something like that.

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Has anyone seen something like this before? I don't care much about it, but I do find it quite interesting and would like more insight about it out of sheer curiosity.

Re: Interesting VA0 Motherboard Factory Fix

Posted: Mon Jun 23, 2025 5:26 pm
by xzer0PL
I have modbo with same bridge. Looking on diagram on newer version it's all alright. Newer versions have printed trace.

Re: Interesting VA0 Motherboard Factory Fix

Posted: Mon Jun 23, 2025 8:07 pm
by Fullen
Cool!
I figured that would likely be the case, but you never know!

Re: Interesting VA0 Motherboard Factory Fix

Posted: Tue Jun 24, 2025 11:09 pm
by PengoJetz
Can’t seem to get the pictures to load, but probably not the first launch Sega consoles needed a factory fix - Very early Japanese Mega Drive units had a mini bodge board installed to correct issues with H40 display mode.