Help Identify this RGB Connector?!

[nipsmg]

I've got a 13" sears/roebuck "Total Video System" television/monitor.
It's got an RGB connector on the back.  I want to try to use that connector to test boards, but I can find out NO info about the connector or its pinout.

It's an 8 pin connection, with pins slanted at a 45 degree angle.  It's not a round DIN connector, but a square connector.  It's definitely labeled RGB.

Does anyone know what that is?

Edit: Rectangular connector.

LIke this:
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[MonitorGuru]

Model #4084 perchance?

It is likely that is a DIGITAL RGB input, not analog, as it appears this set was made for use with the Commodore 128. (as competition to the Commodore 1084 at the time).

However, some/many revisions of the 1084 can be hacked to accept digital RGB (I in fact did just that on the Magnavox built one that people claimed couldn't be done, but it had a totally separate TTL (digital RGB) to Analog RGB converter board that simply needed a quick bypass and tada--instant arcade monitor.

TTL/Digital RGB only has 3 levels of each RGB signal sensed (off, 50%, 100%) for a total of 16 colors, vs unlimited such as normal Analoga RGB.

You should be able to quickly figure out what the pins do, and you could try to send analog RGB signal in from a game board or computer, but the colors won't be right... they will be probably limited to 16 colors... unless you're very lucky.

Not saying it can't be made analog, but it's probably not and would require someone knowledgable viewing the board and detecting it.

You shouldn't hurt anything trying to feed a 5 volt or less signal into it though .  I would crack the case and take a picture of inside the connector, top and bottom and seeing where the lines run to, and we might be able to help idenifying the order... Or just play around yourself..... Check first though to ensure none of them send out a 5 volt signal... they should be electically neutral before you try to connect anything.