Sega Naomi monitor vibration

[mx5dob]

Hi all. Just hooked up a Naomi.to my jamma cab via a capcom i/o and I have screen vibration that I can't remove. I've tried adjusted the vertical hold on the monitor. Don't think focus will do anything as the image isn't blurry. Any ideas?

Paul

 

[mx5dob]

Forgot to mention..its running at 15 khz via the dip switch

 

[Asure]

Isnt this an interlaced output your seeing?
Naomi 15k runs at 480i

 

[big10p]

Looks like an interlacing issue. Is the monitor MTC9000? I had this problem but was able to tweak it away (mostly) as I was using a groovyMAME setup with CRTemudriver. No idea what to do with a Naomi, sorry.

 

[mx5dob]

Yep. It's that model of hanty.. winder if it just can't handle the Naomi

 

[mx5dob]

Can I fix an interlacing issue?

 

[big10p]

Can I fix an interlacing issue?

This is my old thread on the issue, which looks like I at least partly solved by replacing the TDA2595 and socket.

big10p2019-08-10 14:30:18

 

[mx5dob]

Thanks. Will check it out

 

[mx5dob]

Might have a crack at leaving it running and see if it clears up.

 

[gunblade]

there is something else that may or may not help but is quick and cheap to prove, the hantarex can be picky with certain sync signals and to get them to display correctly in olden times we added a 5k resistor from v.sync to v.ground on the rgb connector

 

[mx5dob]

Cool. Thanks