ELSA Winner 2000VL-4 VLB vertical lines issue \ VOGONS

ELSA Winner 2000VL-4 VLB vertical lines issue

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First post, by Turboman

Posted on 2019-08-27, 22:11

Turboman Offline

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When I run my ELSA card at post the vertical lines are barley visible. After about 5 mins or so they are at their worst. What could be the cause of this? I replaced the surface mount capacitor that was on the middle of the board because it was leaking a little bit, but that made no difference. The lines look like they vibrate and scroll. Was also wondering if there is a bios upgrade if such a thing exists on this card?

Last edited by Turboman on 2019-08-27, 22:25. Edited 2 times in total.

Reply 1 of 4, by Turboman

Posted on 2019-08-27, 22:12

Turboman Offline

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More pictures.

Last edited by Turboman on 2021-06-29, 03:16. Edited 1 time in total.

Reply 2 of 4, by Turboman

Posted on 2019-08-27, 22:14

Turboman Offline

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Few more.

Reply 3 of 4, by Windows9566

Posted on 2019-08-27, 22:19

Windows9566 Offline

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my Cirrus Logic GD5446 has that same issue but works fine on CRTs.

R5 7600X, 32 GB RAM, RTX 3060 TI, Win11
P3 750, 384 MB RAM, Matrox G400, Sound Blaster 32, Win98
PMMX 166, 64 MB RAM, S3 Virge DX, Aztech AZT2316R, Win95
486DX2 66, 32 MB RAM, Cirrus Logic GD5430, Aztech AZT2316, DOS

Reply 4 of 4, by elianda

Posted on 2019-08-28, 12:01

elianda Offline

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This is a common issue with TFTs. Your card is fine, your TFT can not cope with the analog signal. One origin is that higher end cards like the ELSA Winner2000 do not exactly use standard pixel clocks for low res/low refresh modes. Your TFT tries to compensate by shifting the PLL to fit the pixel clock to get a full width image. It does it rather bad obviously. This leads to vertical line artefacts.

If your TFT supports it use the refresh rate tool of the card to go to 75Hz or 85Hz for the low res modes.

Just as an example, if you look at the mode tables here for the various cards: http://retronn.de/imports/diamond_bible.html
You notice that some modes have no entry, like 800x600 at 70 Hz, whereas the same card can do 60 Hz and 72 Hz at the same resolution. That is the same problem as with your TFT, the card supports only certain frequencies.

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