I got some thought about making a scart switch (with remote!) from one of my analouge receivers. The selceted one is a Pace MSS200 series.
The first level is easy, switching between 2 devices: Using the VCR input with the standard scart switch signal (when turned on the external device, the receiver switches to the vcr input). Using the decoder scart,just need to selcet AV/0 on the remote, or set for a program the decoder to dec-av.
The hardest part is adding 1 or 2 another inputs. This reciver has an integrated VC-II (former Multichice) decoder.
I thought about adding another rca/scart, and feeding the signal where normally the decoded singal cames out from the VC area (cutting the trace/output from chip). Switching made possible with the vc status. (I read about it in the service manual). If the vc status is high, the receiver would think, it needs to get the signal from the decoder area (where i feed my external signal). There an option in the program menu "external switch", wich would make a 12V signal on the decoder socket, I would strip that, add a voltage regulator and connect to the vc status line, making the switch possible from menu.
The other input method could be feeding the cvbs or rgb signal after the tuner, fakeing the receiver that is comes signal directly from the dish. This needs more exsamination in the service manual. Sadly, the manual i found on the net has in the videocrypt area has huge black stripes on it (I think it was made for copyright so it cold not be copied/scanned). On the weekend I try to make measurements and try to figure out something, but I'm not an electric engineer, so could somebody say something that something could work about this?
I have another receiver, a Pace Prima (aslo with integrated VC-II), I woud accept a service manual/ schema for it.
Any thoughts are welcome
The reason is that I'm trying to make this, I have several old consoles (nes,snes,etc.) wich give the best picture on a crt tv, and this way I don't need to pull out-plug in the cabels from the tv every time changing console. But it's also a nice sutdy about these stbs. Sorry for the long post, and for some grammal failitures.