OSI Composite video to VGA converter

[davisgw]

I have 2 retired VGA LCD monitors that I want to repurpose for my Superboard II computers and I purchased a cheap AV2VGA converter from Amazon that can be switched to 720P for the output. The problem I have is that both monitors complain that the VGA is out of range at 45HZ instead of 60 HZ. And I tested the VGA output on an old LCD TV to be sure the converter is working and it worked just fine.
Does anyone know of a AV2VGA converter that produces 60Hz output or can answer why OSI composite video gets converted to 45HZ? Or is there a way to force the AV2VGA converter to produce 60HZ output? I also tried setting the converter to 1080P with no better success.
Thanks for any insight.

[Thomas]

OSI composite video is a non interlaced signal that may cause the AV2VGA converter not to scale up correctly to 640×480 pixel.
If you own a VHS recorder with RCA video output, try this signal on your AV2VGA converter / LCD monitor.
If this works, then my guess is the missing interlaced video is the root cause.

[Klyball]

if you can grab a DSC-1024HD for around 50 or so , they are great for all your vintage video needs

[davisgw]

Thomas, Thanks for your tips on this issue. It led me to the following 3 links in order that explain the problem and some solutions.
https://www.youtube.com/watch?v=TdfFnR-hOK8
Led me to:
https://forums.nesdev.org/viewtopic.php?t=7909
Led me to:
https://www.retrorgb.com/generic-compos ... ested.html
So I am considering this last solution and post my comments here. But an old LCD TV is beginning to look like the best solution for the money....

[davisgw]

I've done some more evaluation on the hardware I own and discovered that usable text can be displayed on my LCD displays (both are old TVs) by plugging the OSI video into the component video Y input. But if I plug into the AV input they cannot sync on it. Since I do not plan to display graphical games I'm OK with that for one system because I have two monochrome monitors that work.
I've found this website since: https://www.hdretrovision.com/240p
So my retired VGA displays are still unusable without a converter.