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Re-Wired A/V Connectors on ATI Radeon

As part of my Media PC I am using a ATI All-In-Wonder Radeon graphics card.

This card has more Audio and Video related inputs and outputs than any other card.

But sine the inputs and outputs of my Media PC are going to be integrated, I did not want any cables coming out of the back of the PC, only to be re-routed to the inside.

So the solution is to wire the connectors internally in the first place.

Update! The Output connecters are directly mounted to the Radeon now, click here for the page.

Provided on the headers will be:

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Input: S-Video, Composite Video, Audio Left, Audio Right.

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Output: S-Video, Composite Video, Audio Left, Audio Right, SPDIF Digital Audio

The back of the original card.

The two connectors I need to re-wire are labeled above.

I will be soldering the headers directly to the pins on the back of the board

There was just enough space near the CD_IN at the top of the PCB to glue the header to.

But first since we are going to be re-wiring Audio/Video signals we need to shield them from the rest of the board.

In order to provide shielding on the PC board we need to apply Aluminum Tape (Or any other metal tape, NOT duct tape)

But first you should clip the solder lead of the components we are going to tape over. This is to ensure that the leads don't punch through the tape and connect with the metal.

Be careful not to break the solder joints though.

First two layers of electrical tape are applied over the PCB.

Then a layer of aluminum tape was added.

Make sure it does not overlap the electrical tape.

Then add another layer of electrical tape.

Leave the upper corner exposed in order to ground the aluminum tape.

Next our header. I used a right angle header, and clipped out two pins to separate the Input and Output headers.

I the carefully soldered on the ribbon cables that will connect to the Radeon

Now with the header all soldered to the right pins out mod is nearly complete.

I used super glue to hold the header onto the PCB. Also note the piece of braided wire used to ground the shield.

We now have a easy internal header that provides all the video inputs and outputs we need, on an internal header.

Also the connections at the back of the PCB still function perfectly and may be used later without any problems.

If you are interested in the pin-outs at the back of the card.

Input:

1 2 3 4
5 6 7 8
Pin # Signal
1 Ground
2 Ground
3 Composite Video 
4 Ground
5 Chrominance
6 Audio Left
7 Audio Right
8 Luminance

 

Output:

1 2 3 4 5
6 7 8 9 10
Pin # Signal
1 Audio Right
2 SPDIF
3 Ground
4 Chrominance
5 Ground
6 Audio Left
7 Composite Video
8 Ground
9 Ground
10 Luminance

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