I just picked up one of these: http://www.ebay.com/itm/191216727239?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 I was previously using a SCART->RCA adapter I rewired myself that looked great but had a red tinge to the picture. I had built one of these earlier to test out but the colors are over-saturated and I have to strongly reduce the contrast to get a good looking picture. Same SCART cables, same console, different type of connection. Anyone have any ideas before I start taking shots in the dark? I have an idea of what's going on but I don't want to take this thing apart without a more solid idea. Low contrast:http://imgur.com/ExmxRlp Normal contrast: http://imgur.com/LzT1amM
You are certainly one the power user of this forum, so if you didn't find out why, I'm not sure anyone else could find it. :x Maybe obvious questions like mines could make you rebound and think of something else: Could this be the thickness of the cable which could alter the resistance of the cable? Or the frame of the SCART not grounded or not linked to pin 21? Sorry for no being helpful.
Anything is possible, the picture looks strongly of not having the resistors installed but I have them installed properly. I changed the cables from my 20" to my 13" PVM and the picture is absolutely superb so whatever the problem is it's a monitor problem and not a cable issue. Which is just great because I haven't a clue where to start in fixing the problem. Monitor is old enough that a recapping is probably in order but I'll probably have to recalibrate the display.
Wouldn't a PVM have a separate white balance or color point calibration system? Possible to just reduce the Reds in the high end?
This really seems like the resistance on the cables isn't enough... If you got potentiometers lying around it could be worth a shot messing with them to lower the luminosity. (I've found somewhere that 220ohms is standard for those displays, maybe that's what you already did) I've never seen audio/video with BNC cables, but keep in mind those should have an impedence of 50ohms, so if either the source or the receiver of the signal isn't matched it could wreck up the image. But a mismatch should reduce the luminosity instead of increasing it (partly reflecting the signal). BTW some BNCs are 75ohms, but their connectors don't look exactly like these. Also, have you got any other RGB source you can use with that monitor using BNCs? This could help diagnose the problem.
I've got multiple SCART cables for multiple consoles but it looked the same between my SNES Jr, 1CHIP, and N64. I'm strongly suspecting the monitor is out of calibration due to the fact that I rarely use it for testing purposes (my 13" is in a readily accessible location) but I should try additional resistors to see if it clears things up. Even if it does that means I can't just swap cables between the two displays and I'll have to dedicate one per screen.
You could make an adapter with the correct resistors, either on the scart or the bnc side of things and use the same cable for both.
