scart rgb splittr acting really weird - both systems powerup

[shateredsoul]

Hi People,

I'm a bit confused, I have a snes and genesis connected to a scart splitter and then to an upconverter to component cable. When I turn on the snes, the genesis light turns on. When I turn on the genesis, the snes system turns on. WTF? The results is that one system interferes with the signal of the other system.

Here's the kicker, I disconnect the power for the system that's being turned on when not really "on" and it stays on with no ac adapter connected! I think the rgb cables are carrying power. The upconverter is powered through an ac plug, not sure if that along with the splitter causes the issue. When I have one system connected to the splitter the picture is fine, but then why do I need a splitter? Any ideas why this is happening?

see the splitter here, http://www.ebay.com/itm/380366698882?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_4052wt_905

and then the splitter is connected to a CART to RGB YPbPr YUV Component Video Converter, see it here http://www.ebay.com/itm/220698773448?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_1488wt_1185

[CFFJR]

I have the same splitter.

I don't want to offend you, but lets rule out one thing real quick. Each of the four scart ports has its own switch to activate it right? With that splitter, pushing in a switch won't cause a switch that was already in to pop out on its own. Its something you have to change manually when you switch between systems, so be sure you only have one switch pushed in at a time. That will cause the signal interference if you happen to forget or something, which I've done before.

If that isn't the problem, then you've got me. Like I said, I have the same splitter, and I never have any issues with interference unless I have more than one switch active.

As for the power light thing, I've noticed the same thing, but only recently when I hooked up a PC Engine Duo to the setup. In my case, turning on the duo causes the lights on the snes and a master system to turn on, but not a genesis. I've noticed in the case of the snes that the light is dimmer than it would be if you actually flicked on the system's power switch. I have no idea what the cause is, but its odd. Having said that though, I haven't had any issues with the signal.

[shateredsoul]

No worries, no offense taken, it's often the simple things we forget. Unfortunately that wasn't the problem =/ and the light is really not any dimmer for either system. Do you have a model 1 or 2 genesis? I have a model 2 genesis...

It wouldn't bug me as much if the other system didn't cause interference for the sytem on the screen, but it does cause some lines and static to pop up. weird.

[Redifer]

I've had next to no luck with SCART splitters. They degrade the image quality sooo much. I had the same issues you guys do as well (with a different splitter). It just wasn't worth it. It seems that they never bothered to make SCART a useful protocol. It should not be sending the +5v to other consoles at any time no matter what, only to the output. The splitters are built very poorly.

[shateredsoul]

I've had next to no luck with SCART splitters. They degrade the image quality sooo much. I had the same issues you guys do as well (with a different splitter). It just wasn't worth it. It seems that they never bothered to make SCART a useful protocol. It should not be sending the +5v to other consoles at any time no matter what, only to the output. The splitters are built very poorly.

Did you just end up using an individual cable per system?

[Redifer]

Yes. It is a pain to switch them and I always feel they're going to fall apart, but worth it for the picture quality.

[CFFJR]

What's your set up for getting sound then Redifer? Part of the reason I use the splitter is because it passes the audio for 3 of the 4 systems I have connected to it.

Unless you have one of the converter boxes that carries audio as well.

@shateredsoul, my genesis is a model 1.

[Redifer]

I modded my transcoder:

[CFFJR]

Ah, very nice.

I might try that myself... Though the converter is expensive to replace if I fuck it up.

[Redifer]

Well the interesting thing is that the right, left and ground pins shown aren't connected to anything else except the socket so you won't mess up the transcoder part unless you happen to spill solder all over everything. It's very easy to do. Hardest part is probably cutting a notch out of the front plate.