RCA to VGA loses color

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By santiontanon

Hero (588)

santiontanon's picture

22-01-2018, 01:50

I am sure this has been asked at least 1000 times before, but going through those answers, I still cannot figure out what is happening. I am connecting an MSX2 to a PC monitor via a RCA to VGA converter (this one: https://www.amazon.com/gp/product/B0144DEN7Y/ref=oh_aui_deta...), and the image that I get is not what I expected. I am assuming this is due to some 50Hz/60Hz thing (it's a Japanese MSX2, on a US monitor). Has anyone experienced this?

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By Grauw

Enlighted (7316)

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22-01-2018, 09:28

santiontanon wrote:

and the image that I get is not what I expected.

Hey Santiontanon, the image link doesn’t work, looks like you pasted a private Dropbox link rather than a shared public one?

By gdx

Prophet (2145)

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22-01-2018, 10:02

This adapter is bad. It doesn't work with many devices, especially the older ones.
Get a refund if you can! That's what I did. Same adapter is sold under many brands.

By Alexey

Paragon (1577)

Alexey's picture

22-01-2018, 10:45

I agree with gdx - this converter is not usable for vintage computers. The video quality is aweful...

By syn

Paragon (1852)

syn's picture

22-01-2018, 12:53

Do you mean the colors are "washed out" as in dull/bad? in that case I agree with the others, the problem might be the converter itself. I had worse colors from a SCART" splitter" back in the days so yeah.

If by "loses color" means black and white this is a signal problem. I forgot what the exact problem /cause is but my msx2+ would do black/white only through RCA on my old tv, but newer tv is in color. It might be a pal/ntsc problem so perhaps some setting of the adapter might solve it.

By Grauw

Enlighted (7316)

Grauw's picture

22-01-2018, 13:05

Taking composite video input is going to produce crappy video either way, RGB/SCART is much better, converters to HDMI / DVI exist.

Black / white image from composite video is related to PAL / NTSC differences (incompatible colour carrier signal). RGB signal works for both PAL / NTSC btw.

By djh1697

Paragon (1352)

djh1697's picture

22-01-2018, 13:25

I use a composite video input on a 28" monitor. I do not expect anything else other than 'crappy video', something to do with the resolution of the MSX. Your PC resolution might be 1280x1024? MSX1 maximum resolution is only 256x192, MSX2 is only 512x212.

By santiontanon

Hero (588)

santiontanon's picture

22-01-2018, 15:07

Ops, sorry for the bad link! this one should work:

https://www.dropbox.com/s/mue1yiy7bxfuvr7/MSX2-RCA-VGA-BW.jpg?dl=0

Color is lost completely, it's just a black and white image, and also with some artifacts.

By djh1697

Paragon (1352)

djh1697's picture

22-01-2018, 15:48

I would agree with Grauw "Black / white image from composite video is related to PAL / NTSC differences"

By santiontanon

Hero (588)

santiontanon's picture

22-01-2018, 16:47

Ok! Thanks guys!! That gives me some clues to keep looking further into this! But it's weird since both Japan and the US use NTSC, and I am using a Japanese MSX on a US monitor... I'll investigate a bit further later today when I get a chance to play with it a bit more Smile

By syn

Paragon (1852)

syn's picture

22-01-2018, 17:28

I meant the adapter might probably be messing up, maybe thinking it is a PAL signal that you are inputting.

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