Extra AV Out CVBS/Composite output is not working, but S-video and RGB does

[Dorgark]

Hi, I just received my OSSC Pro with the new Extra AV Out. I am seemingly not able to get any signal from the Extra AV out composite output. Are there any settings I have missed in order to make it work? The S-video and VGA outputs are fantastic and seems to be working correctly.

I have set the output mode to S-video+CVBS+RGBS, but I have also tried all the other options. I know it’s not the CVBS cable as the cable works with other adapters and consoles, and I also know it’s not from the TV as the TV receives composite signal from other sources as it normally does.

I’ve tried to output in 240p and 480i, which works when I use S-video and VGA with sync converter to RGB scart. There does not seem to be any signal coming out from the CVBS output. I am at firmware version v0.83. Any pointers?

• This topic was modified 2 weeks, 6 days ago by Dorgark. Reason: Grammar
• This topic was modified 2 weeks, 6 days ago by Dorgark.

[BuckoA51]

Even with the card set to the wrong mode you should still get some picture at 240p/480i it just may be too bright or dark, you’re not even seeing the test card pattern?

[Dorgark]

Yes that’s correct, there’s just no signal. There’s no reaction or any kind of flicker when plugging and unplugging the cable from the TV and the Extra AV output itself.

I’m not sure if there’s any physical damage to the Extra AV Out or not

[marqs]

Sounds like the board might have missing/misplaced resistors R17 or R18, or defective U4 IC. A picture from the top would give more insight.

[Dorgark]

 

Here’s a couple more images

[marqs]

There’s nothing visibly wrong so perhaps the chip / trace is broken and you have to request a replacement board.

[Author]

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