Do you guys use the RGB pcb board in your consolizations?

Just curious, because I've never used these pcbs (the one with the THS7374) and the image is still really good on a CRT TV.

Is the image improvement (with the board) worth it?

littlecharlie said:

Just curious, because I've never used these pcbs (the one with the THS7374) and the image is still really good on a CRT TV.

Is the image improvement (with the board) worth it?

Click to expand...

Hi friend, yes, it is really important, although the image can be filtered with the video chip that they integrate, useful only in some peripherals such as an ossc, what is really useful is rather for security so as not to damage TV, scalers or converters due high and bad voltage provided by pure rgb arcade jamma output not expected by a common home peripherals, It also automatically regulates the synchronism and the colors of the monitor where it is used, leaving it in the optimal range always automatically.

Which PCB? I'm curious about trying it.

Neo Alec said:

Which PCB? I'm curious about trying it.

Click to expand...

They talk in here, and you have links to get the pcb.
https://www.arcade-projects.com/threads/anyone-using-a-cmvs-rgb-pcb-for-mvs-scart-rgb.6469/
https://oshpark.com/shared_projects/R8NJ9UQ4

Jonap said:

Hi friend, yes, it is really important, although the image can be filtered with the video chip that they integrate, useful only in some peripherals such as an ossc, what is really useful is rather for security so as not to damage TV, scalers or converters due high and bad voltage provided by pure rgb arcade jamma output not expected by a common home peripherals, It also automatically regulates the synchronism and the colors of the monitor where it is used, leaving it in the optimal range always automatically.

Click to expand...

But if you use just resistors on the R G B lines and Sync, you should get voltages low enough to not damage your TV
I don't know ... Anyway, I just ordered some pcbs and components to install it in my CMVS and see if the image is improved significantly

littlecharlie said:

They talk in here, and you have links to get the pcb.
https://www.arcade-projects.com/threads/anyone-using-a-cmvs-rgb-pcb-for-mvs-scart-rgb.6469/
https://oshpark.com/shared_projects/R8NJ9UQ4


But if you use just resistors on the R G B lines and Sync, you should get voltages low enough to not damage your TV
I don't know ... Anyway, I just ordered some pcbs and components to install it in my CMVS and see if the image is improved significantly

Click to expand...

I've been using this pcb for my CMVS build with great success:

https://oshpark.com/shared_projects/R8NJ9UQ4

https://imgur.com/a/Lkpmu2n

littlecharlie said:

They talk in here, and you have links to get the pcb.
https://www.arcade-projects.com/threads/anyone-using-a-cmvs-rgb-pcb-for-mvs-scart-rgb.6469/
https://oshpark.com/shared_projects/R8NJ9UQ4


But if you use just resistors on the R G B lines and Sync, you should get voltages low enough to not damage your TV
I don't know ... Anyway, I just ordered some pcbs and components to install it in my CMVS and see if the image is improved significantly

Click to expand...

Yes and no, i repeat, what you are going to get is not a better image, it is a safe and self-synchronized and self-regulated RGB image.

About what you say about the resistors and potentiometers it is true that the voltage values lower, but not correctly where it is needed, each tv and jamma board needs specific values to view the image correctly, you do not attenuate the same voltage with 75ohm as with 500 ohm in an RGB for example, neither with 1k or 4.7k in a Sync.
The RGB-PCB pcb, no matter what RGB or Sync range the mvs / tv is in, it will always leave the voltages at 1.7 and 0.7 which is what those lines expect safely.

avramce said:

I've been using this pcb for my CMVS build with great success:

https://oshpark.com/shared_projects/R8NJ9UQ4

https://imgur.com/a/Lkpmu2n

Click to expand...

I take this opportunity to ask, if you would be so kind to share the 3d design and the pcb breakout of your cmvs.
thanks.

Interesting.

I put some pots on the RGB lines but I'm yet to put the resistor on the sync and capacitors on all of them. Maybe this kind os solution is more elegant.

What MVS board was this PCB designed for exactly? Not all MVS boards have the same RGB levels.

Apparently no particular MVS model ...