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Argon

New LED tv, annoying combined ports

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Alright, so I got this really awesome 3D LED tv (Vizio Razor M3D460SR) but since it's so thin or something they combined the AV input with the Component1 plugs (green is shared with the yellow composite plug) and Component2 with the VGA input (works with a VGA to component passthrough cable and an RCA to 3.5mm stereo cable). Is there anyone with really awesome video ciruitry skills that can help devise a custom external device to combat this?

Wishful thinking:
A) S-Video to Component circuit - Doesn't need to upscale past 480i, but I'd like to keep the quality improvement from the S-Video connector instead of going S-Video -> RCA Composite

A-2) Composite to Component if A) is possible (for 3) below)

B) Some form of automatic switching between sources


Realistic goals / options
1) Input 1: Component + RCA Left/Right, Input 2: VGA Computer + 3.5mm Stereo, Output: VGA connector + 3.5mm Stereo

In other words, make a switch for a VGA -> Component passthrough and a normal VGA source. There's no conversion from Component to an actual VGA signal, the tv supports and has been tested with a Component to VGA cable.

2) Input: Component (Green, Blue, and Red plugs), Composite (Yellow), Output: Green, Blue, White

Explanation: A switch that cuts off Red and Blue when set to Composite, Yellow gets forwarded to Green. I've got an automatic switchbox that only outputs one set of RCA audio cables for both component and composite, so that's why that's not included.

3) Assuming A):
Input 1: S-Video + RCA Left/Right, Input 2: Composite + RCA Left/Right, Input 3: Component + RCA Left/Right, Input 4: VGA + 3.5mm Stereo, Output: VGA connector + 3.5mm Stereo

On Input 2: Left mono to Stereo when Right In connector has no signal

VGA passthrough switch as in 1)

Assuming B) as well:
If there is a signal on Input 4, leave it on 4 unless manually switched. If there is no signal, switch to VGA -> Component passthrough
For inputs 1, 2, and 3 switch to the input that has received a signal last. ie: Input 1 is on, input 3 is turned on switch to input 3, input 2 is turned on switch to input 2. (same function as the switch box I have now)

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[quote name='Argon' timestamp='1327181355' post='2449648']
Alright, so I got this really awesome 3D LED tv (Vizio Razor M3D460SR)
[/quote]
I bought a new VIZIO LED 3D TV as well. I wish it had more inputs.

[quote]but since it's so thin or something they combined the AV input with the Component1 plugs (green is shared with the yellow composite plug) and Component2 with the VGA input (works with a VGA to component passthrough cable and an RCA to 3.5mm stereo cable). Is there anyone with really awesome video ciruitry skills that can help devise a custom external device to combat this?
[/quote]
I think the biggest thing that must be taken into account, is how the TV decides which type of input is in use on the shared ports.
Without knowing that it's pretty much speculation as to what to do.

Sharing the Component/Composite ports might be as simple as using a component switch box and attach composite devices to the appropriate ports on the box. But there is a chance that the TV would detect a low voltage on one of the lines not used by composite and it would assume component.

Switching VGA might be a little tough. Does it look for a signal on the VGA or component ports to decide what is plugged in? It might even switch between two devices already if only one is on at a time.

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Whoops you're right, my automatic switch box will work for composite plugged in on a component green input. Now all I really need is a switch for VGA and VGA -> Component passthrough, and S-video to component if anyone can manage making a schematic to do it.

As for VGA, on the tv it's two separate input channels (Component2/RGB and RGB).

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