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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: PetterM on January 18, 2025, 05:29:33 PM

Title: A500 - rgb2hdmi
Post by: PetterM on January 18, 2025, 05:29:33 PM
Hi,

I'm having problem with getting the rgb2hdmi to get sync signal.
I can see the 1.3 boot image, but its out of sync.
I'm using the latest updated software.

Do anyone knows what can cause this?

I have tried Auto configure, and browsed thru all profiles, but no one is looking ok.
Attaching a short video an a picture of menu with info.
Title: Re: A500 - rgb2hdmi
Post by: DownshiftDX on January 19, 2025, 10:50:06 PM
I never had this problem with any of my RGBtoHDMI boards. The defaults for NTSC (which I have) and testing under PAL always produced an image. The first three I bought from different sellers all suffered from "sparkling" on some transitions of colors and made them unusable and none of the supposed fixes ever made a difference. (These were the original small boards.) I eventually got two of the LinuxJedi CPLD based boards and both are flawless.

I would check to make sure all the pins are making good contact with the socket, Denise, and the Rpi. It almost looks like when the width or the height are too high in the geometry menu but not exactly. (Two images displayed on screen.) And if these are the default profiles that shouldn't be the case.
Title: Re: A500 - rgb2hdmi
Post by: PetterM on January 20, 2025, 10:21:47 AM
Thanks, yes I've had similar advice from others so I'll check it out.
Hope that fixes the issue.