This is the card.
This is the issue. There is no physical damage in the card, it's very clean and nearly mint as you can see in the above photo.
Bands are visible in BIOS and DOS mode too.
Can be bad DRAM chips?
This is mentioned in gona's compatibility video card list especially when used with LCD panel.
Cheers,
Great Northern aka Canada.
Um, does anybody know what's cauaing this issue?
It can't be the fault of the chips or the chip makers.
A noisy chip would never have had made it through quality testing.
Could the lack of filter/smoothing caps be the reason for the vertical bands? Or noisy PSUs?
Or are the cheap LCD monitors to blame?
Are their electronics not able to handle the pixel clock properly?
"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel
//My video channel//
I use an OSSC, does it count as LCD panel?
Also the card was definitely working sometime ago, but I tested it in a different motherboard and power supply. But I don't have them anymore.
mrfusion92 wrote on 2023-01-15, 01:03:I use an OSSC, does it count as LCD panel?
Also the card was definitely working sometime ago, but I tested it in a different motherboard and power supply. But I don't have them anymore.
All devices that uses oversampling rate to read analog to digital and scaler to rescale the image to fit given resolution of digital output possible, depending on quality is more affected than other, if so, that qualifies. Remember LCD panel is digital, not analog means the conversion happens similar way with OSSC.
Cheers,
Great Northern aka Canada.
pentiumspeed wrote on 2023-01-15, 02:06:mrfusion92 wrote on 2023-01-15, 01:03:I use an OSSC, does it count as LCD panel?
Also the card was definitely working sometime ago, but I tested it in a different motherboard and power supply. But I don't have them anymore.
All devices that uses oversampling rate to read analog to digital and scaler to rescale the image to fit given resolution of digital output possible, depending on quality is more affected than other, if so, that qualifies. Remember LCD panel is digital, not analog means the conversion happens similar way with OSSC.
Cheers,
Agreed, if OP has a CRT they can cross reference with, and/or adjust OSSC settings to see if the banding can be minimized.
There have also been a number of posts as of late regarding vertical lines aka 'jailbars' and which seem to be mostly a result of converters/upscalers and/or modern LCDs.
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Have you tried playing with OSSC's LPF (low-pass filter) options ?
When you say the card was previously working without this issue, was it also through an OSSC ?
Does the LCD/OSSC have an option for auto-focus? Try using it.
Requests are also possible... /msg kixs
It was the OSSC, this is photo while card is attached to my Samsung LCD.
No more bands\jailbars, the photo quality is a bit crap but I can assure in rl the picture is good. As @darry said I probably tested this card directly with the monitor, I just didn't remembered that.
I'm disappointed by the OSSC, I tried change some settings (LPF, etc) but nothing solved the issue.
You need to spend some time with sampling settings on OSSC, it is clear the pixel clock that is assumed for the specific input is not quite right and adjustments are necessary. Pixels per line figure needs to change but by how much I don't know.
T-04YBSC, a new YMF71x based sound card & Official VOGONS thread about it
Newly made 4MB 60ns 30pin SIMMs ~
mida sa loed ? nagunii aru ei saa 😜
Thank you, I haven't indeed tried to change that value. I will definitely try and report back the results.
