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Defects in video output.
Posted: Tue Jan 03, 2023 8:31 am
by ludekst
Hello.
What can be the cause of defects in the image? RGB2HDMI output.
Thanks
Re: Defects in video output.
Posted: Tue Jan 03, 2023 11:23 am
by bwinkel67
Oh dear, it looks like a glitch in the Matrix.
Re: Defects in video output.
Posted: Tue Jan 03, 2023 12:34 pm
by Cristian
Hi,
except the video defect, does the QL work normally/properly?
You are using an upscaler: some of them may have problems with QL video output. I suggest to try to connect the QL to a TV (via RGB-SCART or via antenna cable) and check if you see the same defect.
Have you tried also without memory expansion?
Re: Defects in video output.
Posted: Tue Jan 03, 2023 2:33 pm
by Derek_Stewart
ludekst wrote: Tue Jan 03, 2023 8:31 am
Hello.
What can be the cause of defects in the image? RGB2HDMI output.
Thanks
Hi
Try changing the setting in the control panel of the RGB2HDMI
If this doe snot work, try looking a Stardot.org where the designers usually is available to help with the problem.
Re: Defects in video output.
Posted: Wed May 17, 2023 6:20 am
by jobdone
Did you ever solve this issue? I remember when first building one of these I had noise on the screen too caused by the PSU (a cheap phone charger), I changed the PSU and the issue disappeared. I would suspect the CPLD though as it is fairly constant.