Sega Rally Twin Monitors out of sync

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Jackalus
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Sega Rally Twin Monitors out of sync

Post by Jackalus »

Chassis seems to be: MS9-29A on both cabinets.

I cannot find any adjustment for H-Sync or V-Sync from this chassis. The Pins were set to 24khz and the monitors were working properly but after moving the H-Sync or V-Sync is a bit ***ed.

I adjusted this kind of problem np in my other monitors in the past but with this one I cannot find the adjuster pots :(

Pictures:
https://www.dropbox.com/sh/k3rsbh3pyzzpj05/pIdH0D8ruC"

There seems to be some glue in the H-H 15khz and H-H 24khz screws I don't know if these are the right ones.

Thanks a lot for help.
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Jackalus
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

Pics of distortion added to folder.
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Re: Sega Rally Twin Monitors out of sync

Post by FrancoB »

The H.H pots are horizontal hold, give the 24k one a go if it's a 24k game.
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

Is there no V. Hold?

I tried with H-Hold, picture just became more **cked up :(
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

It's in the both monitors exactly the same, maybe some GND problem?
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

Or Potentiometers moved on transport?
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Re: Sega Rally Twin Monitors out of sync

Post by thechop »

Be a massive coincidence to cause exactly the same problem on both monitors, gotta be something that affects both surely?
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Re: Sega Rally Twin Monitors out of sync

Post by thechop »

Or is this after you have adjusted the same thing on both? Or are pics from before you touched them or after?
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

I didn't touch either of them. TV repair man is coming today to check it out. I hope he can figure out what is causing the problem.
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Re: Sega Rally Twin Monitors out of sync

Post by thechop »

Yeah it's strange it affects both, cabs are only connected by the link cables aren't they? Separate psu's and that?
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

thechop wrote:Yeah it's strange it affects both, cabs are only connected by the link cables aren't they? Separate psu's and that?
Yes is completely original internals. Monitors are original too according to manual, well same as original models.
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

TV guy said there is probably something distorting the video signal and there is other more expert guy coming on wednesday to see with an oscillator.
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Re: Sega Rally Twin Monitors out of sync

Post by Jackalus »

I will today go trough all harness and every ground.
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