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frosty

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Hi everyone

Relatively new to the world of CRT technology

Can someone please school me on how to properly dial in the HS LIM and VS LIM pots on a Nanao MS9 chassis, and how these should be set in conjunction with the H SIZE and V SIZE pots on the remote board?

i.e should I start with the pots on the remote board maxed out, then adjust the HS LIM and VS LIM pots accordingly?

I have a slight wavyness/bowing problem on the left hand side of my MS9 screen - see the link below
https://photos.app.goo.gl/wo6vu9xQwJaEXnau6

Severity seems to differ greatly between games (I'm using a Mistercade) and occasionally seems to correct itself during in-game transitions - you'll see it correct itself when I switch games from 1942 to Esp Ra De. The issue also seems to be markedly worse from booting the machine up cold.

Have performed a full recap, but problem persists

Someone on a FB page mentioned that could potentially be fixed by adjusting the H Size and HS Lim pots, but I think the more I tinker with them, the worse it's getting! Of course it could also be something completely unrelated....

Can anyone help me out before I break out the sledgehammer?
 
Last edited:
When is the last time a cap kit was done? Seems like a freq. adj issue.
 
Was fully recapped a few weeks ago - issue was present before and after, unfortunately
 
Do you have an actual jamma pcb to test. Same result?
 
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