big10p Posted February 10, 2020 Share Posted February 10, 2020 (edited) This is my first post here, so first of all, hello everyone! I'm due to take delivery of my first Vectrex soon - a console I've always fancied owning. I love vector games! Anyway, on to my question... I've seen mention of resetting the DAC back to zero, but can't find what doing this actually does! There's even a vid on YouTube showing how to do it, using a test cart and multimeter, but fails to mention the reason for making the adjustment. Can someone enlighten a Vectrex noob, please? Edited February 10, 2020 by big10p Quote Link to comment Share on other sites More sharing options...
chopperthedog Posted February 13, 2020 Share Posted February 13, 2020 You're making sure that the voltage is zeroed out when nothing is being drawn to the screen. Logic board generates digital signal and DAC converts to analog to drive the vector monitor, it's kinda like setting the idle on an old engine. There are some bad vids out there, best place to start is giving the vectrex service manual and read through a couple times, helped me a ton. It's like 40 pages long or so, covers in some detail of the operation of circuit, find it on console5 or other places. good day. 1 Quote Link to comment Share on other sites More sharing options...
big10p Posted February 13, 2020 Author Share Posted February 13, 2020 Thanks for the explanation. I've found the manual PDF and will print it out to have a good read through. Quote Link to comment Share on other sites More sharing options...
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