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Sync issues with mister video amp on a Nanao MS9-29

mattc

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Sep 7, 2022
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I have mister -> jamma hobby project I've been working on for a bit now in my spare time.

2025-03-02 11_41_42-.jpg

The setup works perfectly on my big blue I have at home (k7000 based). However, when I gave one to a friend to try out on his ms9-29 based cab, it fails to sync properly.
After seeing that the mister outputs 3.3v sync levels, I used a 74HCT125D to boost the sync levels up to more reasonable TTL levels, and it still fails to sync properly.

Any idea's on what I'm missing, and why my old lcd taking the signal is willing to sync properly, and my k7000 can sync properly, but the ms9-29 is unable to?

Here's a screenshot of the sync after boosting it to 5v with the 74HCT125D

2025-03-02 11_50_24-Photo - Google Photos.jpg


Thanks for any help anyone can provide on other monitor peculiarities (or what I can look into optimizing on my end).

Thanks again!
 
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