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Post by prabmire on Jan 17, 2012 13:08:28 GMT
Hey guys,
My old faithful toshiba sometimes gives me trouble with RGB scart. I've noticed it on a few consoles, some display RGB perfectly, ps1/2, original xbox and some other older consoles, but some do not! The latest issue i've had is with my white JP saturn.
The issue is that originally it worked fine gave glorious colour etc, now its doing the same thing that happens when using the ps3 (i have a hdtv downstairs but sometimes i game upstairs), i get lots of like pixely dots, more like fuzzy distortion, screen sometimes shakes, my 360 is fine over RGB scart, just this white saturn and ps3 giving me issue.
Do you think it could be down to dry solder in the tv? or maybe a simple fix in the saturn
Prab
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Post by prabmire on Jan 17, 2012 13:11:17 GMT
Ok funny thing is, since chanigng the clock battery it works fine now!
Quick edit,
Doesnt work again worked fine for all of a few minutes back to fuzzy again
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Post by prabmire on Jan 17, 2012 13:15:43 GMT
Ok so whats happening now is, its crystal clear one second fuzzy the next then crystal again like its switching between RGB and Composite over the scart if that makes sense  |
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Post by zyrobs on Jan 17, 2012 13:37:40 GMT
Are you using a PAL cable with a NTSC saturn?
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mick_aka
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Post by mick_aka on Jan 17, 2012 14:11:06 GMT
That was going to be my question also...
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Post by prabmire on Jan 17, 2012 14:22:21 GMT
Yes i am, but this cable work fine with this jp saturn and my other TV's, but this RGB issue seems to affect my dreamcast now and then, maybe i'll get a jp cable and see if that works, but i know others on this forum have used pal cables on jp saturns with no such issue
Prab
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Post by buckoa51 on Jan 17, 2012 14:41:13 GMT
You could try a raw/pure sync cable that often helps.
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Post by prabmire on Jan 17, 2012 14:46:43 GMT
Yeah, only issue is no UK stock of scart cables for some reason, its like a global shortage gotta order one from the states , guess i'll keep playing bomberman on my portable, or on this tv with the composite cable! |
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Post by buckoa51 on Jan 17, 2012 14:52:40 GMT
I think Retro Console Accessories might still be taking some time off but she will be back.
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Post by zyrobs on Jan 17, 2012 16:05:54 GMT
You could try a raw/pure sync cable that often helps. That's not the problem here, he is using a PAL cable which is set to use a +9v pin which does not exist on NTSC consoles. C-sync is fed into that pin instead. Which does not supply a stable enough voltage for RGB selection to be permanent, and so the set is switching back and forth between composite and RGB. This has been explained a million times already. You either have to mod your saturn to output voltage instead of c-sync, or make/buy a cable that is wired for NTSC machines. Ebay has them for sale right now. |
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Post by prabmire on Jan 17, 2012 16:15:12 GMT
Yes i understand that but the thing is, on my other tv set using this cable and this saturn it works fine, but I will be buying the propper cable soon, shipping from the states only at the moment!
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Post by zyrobs on Jan 17, 2012 16:56:53 GMT
It's TV dependent. Some sets don't mind the low alternating current voltage and just need *some* signal to switch to rgb. Others will flip the fuck out. The official standard is +9v to +12v, and this is the reason why PAL saturns have an extra voltage pin on the video out to supply that voltage (next to the +5v pin which is already there).
Later model 2 saturns even use a different PSU that supply a +9v or +12v voltage for nothing else but the video out.
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Post by prabmire on Jan 17, 2012 16:59:42 GMT
Ahh i get it, i just didnt think it would affect old CRT tv's like what im using, I know for other people it has affect newer flat screens
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Post by buckoa51 on Jan 17, 2012 18:38:21 GMT
Are you certain? 9 to 12 volts is an awful lot for a simple signal. I thought it was more like 1 to 3, which should be supplied by pin 4 (on the Saturn end), though I have encountered badly wired cables that used pin 1 instead so that could be happening.
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Post by zyrobs on Jan 17, 2012 19:19:11 GMT
I'm wrong, +9v to +12v is the status & aspect ratio select (that's why they changed the pinout).
RGB selection is +1 to +3v which you can get on a stock ntsc saturn with the correct cable.
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