Nanao MS9-29A Wavyness/Bowing problem

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mrfrosty
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Nanao MS9-29A Wavyness/Bowing problem

Post by mrfrosty »

Hi
Does anyone have any ideas what may be causing the wavyness / bowing on the left hand side of this Nanao MS9-29 screen? Particularly noticeable in the top left corner

https://photos.app.goo.gl/AbVgrFm8vcEj7JKq7

Seems to be prominent in some games, non existent in others, whilst certain games (like Esp Ra De shown), it seems to fluctuate, getting really pronounced during screen transitions then correcting itself.

Problem occurring before and after a full recap and I'm using a Mistercade.

Thanks!
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monsieurtibo
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Re: Nanao MS9-29A Wavyness/Bowing problem

Post by monsieurtibo »

You say: "Problem occurring before and after a full recap and I'm using a Mistercade."

So, you're meaning that since you have this chassis, the image has never been correct?
Have you done a full recap or you've changed only few of them?
Last question, have you try a real PCB and not only a Mister?
mrfrosty
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Re: Nanao MS9-29A Wavyness/Bowing problem

Post by mrfrosty »

That's correct - performed a full recap and problem still occurring.

I sold all my PCBs when I switched over to thr Mistercade, but have used the Mistercade on another cabinet without issues.

Someone on another forum suggested checking the B+ voltage, but not very easy to access the TP2 pin when the monitor is in tate orientation, so will have to remove the monitor, which I've not had the opportunity to do yet
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